| Irish Business Name | Partial Irish Business Address |
| O' Callaghan Cleaning & Hygiene | Cork |
| Ocphotography | Cork |
| O 'Connor Freight Services | Kerry |
| O 'Connor Lawnmowers | Limerick |
| O C Business Development | Clare |
| O C Carpentry | Cork |
| O C Consulting | Kildare |
| O C D Metal Fabricating And Plumbing | Dublin |
| O C Garage | Cork |
| O C Landscape And Construction | Louth |
| O C M Engineering | Dublin |
| O C Transport Cork | Cork |
| O Cadhla | Tipperary |
| O Cadla | Waterford |
| O Callaghan Brothers | Kerry |
| O Callaghan Kelly Solictors | Dublin |
| O Callaghan Town & Country Real Estate | Kerry |
| O Callaghans Motor Works | Cork |
| O Carroll Crash Repairs | Limerick |
| O Cathain & Co | Cork |
| O Cathain Solicitors | Cork |
| O Cathasaigh & Co. | Cork |
| O Ceallaigh And Company | Dublin |
| O Ceallaigh Ecology | Galway |
| O Ceallaigh Gardening Services | Wicklow |
| O Cionnaighs | Cork |
| O Conaill | Cork |
| O Conaire Consulting Engineers | Mayo |
| O Connell Dry Lining | Galway |
| O Connell Drylining | Galway |
| O Connell Funeral Directors | Cork |
| O Connell House Partnership | Laois |
| O Connell Insurances | Dublin 22 |
| O Connell Kenny Carpentry O.C.K. Carpentry | Cork |
| O Connell Motorworks | Cork |
| O Connell Pharmacy | Dublin |
| O Connell Street Tourism Office | Dublin 1 |
| O Connell'S Cleaning | Cork |
| O Connells Garage | Cavan |
| O Connor & Co | Dublin 15 |
| O Connor & Co., Chartered Certified Accountants | Cork |
| O Connor & Ryan | Clare |
| O Connor Bros | Dublin |
| O Connor Bros | Cork |
| O Connor Carpentary & Roofing Services | Tipperary |
| O Connor Carroll Bathrooms & Stairlifts | Dublin 12 |
| O Connor Carroll Stairlifts | Dublin 12 |
| O Connor Coach Hire | Cork |
| O Connor Contracts | Clare |
| O Connor Farm | Clare |
| O Connor Farm Partnership | Kerry |
| O Connor Farm Supplies | Cork |
| O Connor Fastway Couriers | Cork |
| O Connor Fuels Crookstown | Cork |
| O Connor Groundworks | Clare |
| O Connor Group | Dublin 4 |
| O Connor Group | Dublin 4 |
| O Connor Haulage | Galway |
| O Connor Law | Wexford |
| O Connor Mechanical Services | Kildare |
| O Connor Opticians | Dublin |
| O Connor Sports | Cork |
| O Connor'S Bar | Kerry |
| O Connor'S Of Tulsk Co Roscommon | Roscommon |
| O Connors | Waterford |
| O Connors Bakery | Waterford |
| O Connors Butchers Farm Fresh Meats | Galway |
| O Connors Centra Quick Stop | Galway |
| O Connors Fruit And Veg | Kerry |
| O Connors Garage | Meath |
| O Connors Garage | Limerick |
| O Connors Of Ballinlough | Roscommon |
| O Connors Restaurant | Cork |
| O Connors Seafood Restaurant | Cork |
| O Corrain Heraldry | Dublin 1 |
| O Cualann Co-Housing Alliance | Wicklow |
| O Cuana Lawn Care & Landscaping | Cork |
| O Cuileain Carpentry | Wexford |
| O Culain, Tuairisg Plumbers | Galway |
| O Curnain Baiceir | Kerry |
| O' Callaghan Agri Hire | Louth |
| O' Callaghan Coach Holidays | Kerry |
| O' Callaghans Bar & Lounge | Kerry |
| O' Carroll Engineering | Kerry |
| O' Connell Coaches | Cork |
| O' Connell Engineering | Cork |
| O' Connell'S | Galway |
| O' Connor Agri Services | Westmeath |
| O' Connor Bros. Garage | Kerry |
| O' Connor Brothers Tiling | Dublin 15 |
| O' Connor Building | Dublin |
| O' Connor Centra | Galway |
| O' Connor Estate Agents | Dublin |
| O' Connor Freight | Kerry |
| O' Connor Fuels | Kerry |
| O' Connor Hurleys | Kildare |
| O' Connor Nurseries | Wexford |
| O' Connor O' Farrell Estate Agents | Dublin 8 |
| O' Connor Property Management | Dublin |
| O' Connor Upholstery | Limerick |
| O' Connor'S Ennis Veterinary Surgery | Clare |
| O' Connor'S Garage | Kerry |
| O' Connor, Kelliher & Treacy | Kerry |
| O' Connors | Tipperary |
| O' Connors Bar | Waterford |
| O' Connors Famous Pub | Galway |
| O' Connors Garage | Wexford |
| O' Cuimin Mc Callion Architects | Galway |
| O'C Auto Factors | Cork |
| O'C Bar | Cork |
| O'C Drain Services | Cork |
| O'C Mechanical Services | Tipperary |
| O'C Mechanical Services | Tipperary |
| O'C Refrigeration | Tipperary |
| O'C Studio | Dublin |
| O'C Welding & Fabrication | Offaly |
| O'Callaghan & Associates | Dublin |
| O'Callaghan & Co | Dublin |
| O'Callaghan - Walshe | Cork |
| O'Callaghan Advisory | Waterford |
| O'Callaghan Agri | Cork |
| O'Callaghan Cleaning Service | Westmeath |
| O'Callaghan Cleaning Services | Westmeath |
| O'Callaghan Cleaning Services | Cork |
| O'Callaghan Coaches | Kerry |
| O'Callaghan Collection | Dublin 2 |
| O'Callaghan Construction | Cork |
| O'Callaghan Crash Repair Services | Cork |
| O'Callaghan Daly | Limerick |
| O'Callaghan Electrical | Cork |
| O'Callaghan Electrical | Dublin |
| O'Callaghan Electrical Services | Dublin |
| O'Callaghan Executive Mini Bus Hire | Cork |
| O'Callaghan Financial Management | Louth |
| O'Callaghan Fireplaces | Cork |
| O'Callaghan Hotels | Dublin 2 |
| O'Callaghan Hotels | Dublin 2 |
| O'Callaghan Hotels Central Reservations | Dublin 2 |
| O'Callaghan Insurances | Kerry |
| O'Callaghan Insurances | Louth |
| O'Callaghan Insurances | Meath |
| O'Callaghan Lally Solicitors | Galway |
| O'Callaghan Landscaping | Cork |
| O'Callaghan Legal | Dublin |
| O'Callaghan Lotty & Co | Cork |
| O'Callaghan O'Mahony | Wexford |
| O'Callaghan Properties | Cork |
| O'Callaghan Strand Partnership/Ocs Partnership | Limerick |
| O'Callaghan Transport | Limerick |
| O'Callaghan Travel | Louth |
| O'Callaghan'S | Leitrim |
| O'Callaghan'S Bar | Leitrim |
| O'Callaghan'S Centra | Wexford |
| O'Callaghan'S Delicatessen & Cafe | Cork |
| O'Callaghan'S Garage | Cork |
| O'Callaghan'S Garage | Tipperary |
| O'Callaghan'S International Tradings | Dublin 9 |
| O'Callaghan-Bell Psychology | Dublin 15 |
| O'Callaghans | Cork |
| O'Callaghans Auto Services | Cork |
| O'Callaghans Coaches | Cork |
| O'Callaghans Daybreak | Clare |
| O'Callaghans Garage | Cork |
| O'Callaghans Strand Development Partnership | Limerick |
| O'Callaghans Supervalu | Offaly |
| O'Callahgans Tyres | Cork |
| O'Carolan Bar | Roscommon |
| O'Carroll & Company | Dublin 15 |
| O'Carroll Consulting | Dublin |
| O'Carroll Electrical | Dublin 22 |
| O'Carroll Farm Services | Offaly |
| O'Carroll Fitzgerald Consulting Engineers | Kerry |
| O'Carroll Lawnmowers | Kerry |
| O'Carroll O'Riordan Architects | Dublin |
| O'Carroll Sports Turf Drainage | Offaly |
| O'Carroll'S | Cork |
| O'Carroll'S Allcare Pharmacy | Kerry |
| O'Carroll'S Bar And Lounge | Louth |
| O'Carrolls Allcare Pharmacy | Cork |
| O'Casey'S Pharmacy | Dublin 3 |
| O'Caseys | Louth |
| O'Ceallachain Caman | Cork |
| O'Ceallachain'S | Tipperary |
| O'Ceallachain'S | Tipperary |
| O'Ceallaigh Woodcraft | Clare |
| O'Ceilleachair | Limerick |
| O'Ciobhain'S Supervalu | Louth |
| O'Code Nua | Galway |
| O'Coileain Craft Butchers | Meath |
| O'Conaill Chocolates | Cork |
| O'Conchubhair Commercials | Sligo |
| O'Connell & Clarke Solicitors | Dublin 7 |
| O'Connell & Co | Donegal |
| O'Connell Brennan Llp | Dublin 2 |
| O'Connell Bros | Cork |
| O'Connell Bros | Mayo |
| O'Connell Brothers | Leitrim |
| O'Connell Cleaning | Dublin 7 |
| O'Connell Coaches | Cork |
| O'Connell Coaches | Laois |
| O'Connell Construction | Wicklow |
| O'Connell Construction | Limerick |
| O'Connell Consultant Engineers | Clare |
| O'Connell Court | Cork |
| O'Connell Developments | Galway |
| O'Connell Fab | Offaly |
| O'Connell Family Practice | Meath |
| O'Connell Farm Machinery | Kerry |
| O'Connell Flynn School Of Motoring | Limerick |
| O'Connell Group | Cork |
| O'Connell Group | Cork |
| O'Connell Group | Cork |
| O'Connell H/V Services | Kerry |
| O'Connell Ivory | Waterford |
| O'Connell Ivory Communications | Waterford |
| O'Connell Limited Partnership | Limerick |
| O'Connell Mahon Architects | Dublin 2 |
| O'Connell Mall | Tipperary |
| O'Connell Motors | Limerick |
| O'Connell Motors | Clare |
| O'Connell Motors | Dublin |
| O'Connell Painting & Decorating | Kerry |
| O'Connell Precision | Dublin |
| O'Connell Promotions | Offaly |
| O'Connell Quarries | Clare |
| O'Connell St Dental Clinic | Waterford |
| O'Connell Street Dental Clinic | Dublin 1 |
| O'Connell Street Furnishings | Waterford |
| O'Connell Street Medical Centre | Dublin 1 |
| O'Connell Swift Electrical | Kildare |
| O'Connell Tree Services | Cork |
| O'Connell'S Auto Repairs | Tipperary |
| O'Connell'S Bar | Limerick |
| O'Connell'S Bar Charleville | Cork |
| O'Connell'S Lakelands Pharmacy | Dublin |
| O'Connell'S Of Glanmire | Cork |
| O'Connell'S Pharmacy | Cork |
| O'Connell'S Pharmacy | Tipperary |
| O'Connell'S Pharmacy | Cork |
| O'Connell'S Plumbstore | Cork |
| O'Connell'S Poultry Farm | Kerry |
| O'Connell-Flynn School Of Motoring | Limerick |
| O'Connells | Dublin |
| O'Connells Bar | Galway |
| O'Connells Bar | Galway |
| O'Connells Bar | Galway |
| O'Connells Decor Shop | Kerry |
| O'Connells Of Glanmire | Cork |
| O'Connells Of Shankill | Dublin |
| O'Connells Plumbstore | Cork |
| O'Connells Pub | Kildare |
| O'Connor | Dublin 2 |
| O'Connor & Associates | Dublin |
| O'Connor & Bergin | Dublin 7 |
| O'Connor & Carroll Bathrooms | Dublin 12 |
| O'Connor & Carty, Tax Advisory Consultants | Wexford |
| O'Connor & Co. Chartered Accountants | Galway |
| O'Connor & Partners | Dublin 18 |
| O'Connor & Smyth Plastering | Westmeath |
| O'Connor & Stevenson | Galway |
| O'Connor + Shanahan Architects | Limerick |
| O'Connor Accounting & Taxation | Sligo |
| O'Connor Agri Services | Cork |
| O'Connor Agricultural Contractors | Kildare |
| O'Connor Architectural Design | Louth |
| O'Connor Architectural Design And Planning | Cork |
| O'Connor Auto Repair & Service | Limerick |
| O'Connor Bros | Dublin |
| O'Connor Bros | Cork |
| O'Connor Bros Agriculture Contractors | Kerry |
| O'Connor Bros. Funeral Homes | Cork |
| O'Connor Brothers | Tipperary |
| O'Connor Brothers | Kerry |
| O'Connor Buckley & Company | Dublin |
| O'Connor Building & Carpentry | Offaly |
| O'Connor Building Design | Kerry |
| O'Connor Butchers | Limerick |
| O'Connor Car Sales | Wexford |
| O'Connor Carpentry | Dublin |
| O'Connor Carriers Castlerea | Roscommon |
| O'Connor Cars | Dublin 15 |
| O'Connor Cleaning And Painting Services | Kerry |
| O'Connor Coach Hire | Cork |
| O'Connor Coach Hire | Cork |
| O'Connor Commercial Trucks | Wicklow |
| O'Connor Commercials | Clare |
| O'Connor Construction | Cork |
| O'Connor Construction | Kerry |
| O'Connor Construction | Cork |
| O'Connor Consulting And Training | Kerry |
| O'Connor Developments | Galway |
| O'Connor Dry Cleaners | Dublin |
| O'Connor Electronics Aerial & Electrical Services | Tipperary |
| O'Connor Engineering | Wexford |
| O'Connor Engineering | Limerick |
| O'Connor Engineering | Kerry |
| O'Connor Family Partnership | Dublin 14 |
| O'Connor Farm | Wicklow |
| O'Connor Farm Machinery | Mayo |
| O'Connor Farm Partnership | Limerick |
| O'Connor Forde | Galway |
| O'Connor Freight Services | Offaly |
| O'Connor Fuels | Galway |
| O'Connor Funeral Undertakers | Kerry |
| O'Connor General Building Contractors | Offaly |
| O'Connor Harrington | Kildare |
| O'Connor Haulage | Cork |
| O'Connor Haulage | Cork |
| O'Connor Heating & Plumbing | Wicklow |
| O'Connor Hedge Cutting | Kerry |
| O'Connor Hospitality Group | Clare |
| O'Connor Hospitality Group | Clare |
| O'Connor Hospitality Group | Clare |
| O'Connor Hurley Opticians | Cork |
| O'Connor Hurleys | Cork |
| O'Connor Intellectual Property | Dublin |
| O'Connor Johnson | Sligo |
| O'Connor Julian Veterinary Surgeons | Tipperary |
| O'Connor Kelliher & Treacy | Kerry |
| O'Connor Landscaping | Cork |
| O'Connor Leddy & Co | Dublin |
| O'Connor Leddy Holmes | Dublin |
| O'Connor Martin | Louth |
| O'Connor Martin & Company | Louth |
| O'Connor Mccormack | Kildare |
| O'Connor Mccormack Solicitors | Kildare |
| O'Connor Mechanical Services | Clare |
| O'Connor Memorials | Kerry |
| O'Connor Metal Works | Limerick |
| O'Connor Minicoach Services | Wexford |
| O'Connor Mobile Homes | Wexford |
| O'Connor Mohan & Company | Dublin |
| O'Connor Motor & Agri | Cork |
| O'Connor Motors | Limerick |
| O'Connor Mullen | Wexford |
| O'Connor Murphy | Limerick |
| O'Connor Murphy Auctioneers | Limerick |
| O'Connor Murphy Clune Solicitors | Cork |
| O'Connor Murphy Gubbins Commercial | Limerick |
| O'Connor O'Dea Binchy | Limerick |
| O'Connor O'Donoghue & Co. | Kerry |
| O'Connor O'Shea | Kerry |
| O'Connor Office Supplies | Kildare |
| O'Connor Opticians | Dublin |
| O'Connor Partnership | Clare |
| O'Connor Pharmacy | Cork |
| O'Connor Plant Hire | Roscommon |
| O'Connor Plastering | Westmeath |
| O'Connor Plumbing | Meath |
| O'Connor Plumbing & Heating | Dublin |
| O'Connor Property Agents | Limerick |
| O'Connor Property Management | Dublin |
| O'Connor Property Management | Dublin |
| O'Connor Pyne & Co. | Cork |
| O'Connor Quantity Surveyors | Kerry |
| O'Connor Shannon | Dublin 6 |
| O'Connor Tours Doolin | Clare |
| O'Connor Transport | Roscommon |
| O'Connor Transport | Cork |
| O'Connor Tyres | Tipperary |
| O'Connor Walshe | Dublin 8 |
| O'Connor' S Pub | Kerry |
| O'Connor'S | Wicklow |
| O'Connor'S | Dublin |
| O'Connor'S | Wicklow |
| O'Connor'S | Sligo |
| O'Connor'S | Limerick |
| O'Connor'S Allcare Pharmacy | Galway |
| O'Connor'S Bar | Kerry |
| O'Connor'S Bar | Galway |
| O'Connor'S Bar | Kerry |
| O'Connor'S Bar | Sligo |
| O'Connor'S Bar & Guest House | Kerry |
| O'Connor'S Caravan Park | Kerry |
| O'Connor'S Famous Pub | Galway |
| O'Connor'S Foodstore | Cork |
| O'Connor'S Fruit & Veg | Dublin |
| O'Connor'S Funeral Home | Kerry |
| O'Connor'S Garage | Cork |
| O'Connor'S Kenyon Street Market | Tipperary |
| O'Connor'S Londis | Limerick |
| O'Connor'S Machinery | Kerry |
| O'Connor'S Pharmacy | Cork |
| O'Connor'S Pharmacy | Cork |
| O'Connor'S Pharmacy | Dublin |
| O'Connor'S Pharmacy | Cork |
| O'Connor'S Pub | Kerry |
| O'Connor'S Supervalu | Tipperary |
| O'Connor'S Tile And Marble | Kerry |
| O'Connor'S Travel | Kerry |
| O'Connor'S Village Shop | Clare |
| O'Connor, Crossan & Co. | Dublin 12 |
| O'Connor, Menton & Co. | Tipperary |
| O'Connors | Mayo |
| O'Connors | Dublin 8 |
| O'Connors | Galway |
| O'Connors | Kildare |
| O'Connors Audio Visual | Galway |
| O'Connors Bar | Galway |
| O'Connors Bar & Guesthouse | Kerry |
| O'Connors Cafe Bar And Restaurant | Limerick |
| O'Connors Cleaning Services | Dublin 7 |
| O'Connors Fruit & Veg | Clare |
| O'Connors Garage | Kerry |
| O'Connors Hardware & Farm Supplies | Kerry |
| O'Connors Newsagents | Clare |
| O'Connors Of Drumleck | Louth |
| O'Connors Of Galway (William Street) | Galway |
| O'Connors Of Kerry | Kerry |
| O'Connors Pub | Dublin |
| O'Connors Seafood Restaurant | Cork |
| O'Connors Seafood Restaurant And Bar | Cork |
| O'Connors Spar | Kerry |
| O'Connors Tractors | Kerry |
| O'Connors Transport | Dublin 22 |
| O'Connors World Of Wonder | Kerry |
| O'Crualaoi Feoil | Cork |
| O'Crualaoi Wilton | Cork |
| O.C. Cars | Meath |
| O.C. Engineering / "Simply Iron" | Kildare |
| O.C. Enterprises | Dublin |
| O.C. Racing | Kildare |
| O.C. Wedding Videography | Kildare |
| O.C.C. Electrical Services | Kildare |
| O.C.H. Partnerships | Dublin |
| Oc | Tipperary |
| Oc Auto Services | Wexford |
| Oc Bus Hire | Dublin |
| Oc Cabs | Wexford |
| Oc Consultants | Dublin |
| Oc Consulting | Galway |
| Oc Couriers | Cork |
| Oc Crash Repairs | Cork |
| Oc Dental | Wexford |
| Oc Electrical | Wicklow |
| Oc Electrical Services | Westmeath |
| Oc Engineering | Kerry |
| Oc Excess | Dublin |
| Oc Fitness | Cork |
| Oc General Works | Tipperary |
| Oc Hire | Westmeath |
| Oc Ironworks | Laois |
| Oc Landscapes | Dublin |
| Oc Landscaping | Waterford |
| Oc Mobility Solutions | Dublin |
| Oc Mobility Wav Hire | Dublin |
| Oc Music | Cork |
| Oc Photography | Cork |
| Oc Physical Therapy | Carlow |
| Oc Pipe Solutions | Tipperary |
| Oc Power Generation | Cork |
| Oc Production Services | Dublin 22 |
| Oc Productions | Clare |
| Oc Productions | Kerry |
| Oc Safety | Westmeath |
| Oc Scaffolding | Wexford |
| Oc Security | Kildare |
| Oc Services | Cork |
| Oc Showjumping | Meath |
| Oc Solutions | Kildare |
| Oc Training And Event First Aid | Roscommon |
| Oc Transport | Cork |
| Oc Wav Taxi | Dublin |
| Ocaidi | Roscommon |
| Ocana Fest | Cork |
| Ocana'S Restaurand And Bar | Cork |
| Ocapoint Technology | Cork |
| Occ | Dublin |
| Occ | Dublin 15 |
| Occ | Dublin 15 |
| Occ | Dublin |
| Occ Autobody | Wexford |
| Occ Building Services | Kildare |
| Occ Catering | Louth |
| Occ Construction | Galway |
| Occ Construction | Louth |
| Occ Electrical Services | Kildare |
| Occ O'Connell Construction | Kildare |
| Occ O'Connor Carpentry | Kerry |
| Occ Restoration | Kerry |
| Occam | Louth |
| Occasionkits | Dublin |
| Occasions | Cork |
| Occasions | Waterford |
| Occasions | Tipperary |
| Occasions | Dublin |
| Occasions Boutique | Galway |
| Occasions By Kate | Longford |
| Occasions Hairdressing | Dublin |
| Occe Engineering Services | Clare |
| Occumed Occupational Medicine Consultants | Dublin |
| Occupational First Aid Direct | Tipperary |
| Occupational First Aid Services | Dublin |
| Occupational First Aid Training South East | Waterford |
| Occupational Health Hygiene And Safety Exhibition And Conference | Dublin |
| Occupational Health Solutions | Cork |
| Occupational Health, Safety, Fire, Food And Enviromental Services | Dublin |
| Occupational Medical Group | Dublin 1 |
| Occupational Medicine Group | Dublin 1 |
| Occupational Medicine Group | Limerick |
| Occupational Therapy Commissioning Services | Dublin 22 |
| Occupational Therapy Consultants | Dublin |
| Occupational Therapy Dublin | Dublin 6w |
| Occupational Therapy Providers | Dublin |
| Occupational Therapy Regulation For Living | Laois |
| Occupational Therapy Services | Dublin |
| Occupli | Cork |
| Occupop | Dublin |
| Occupy Cork | Cork |
| Ocd Car Interiors | Cork |
| Ocd Detailing | Offaly |
| Ocd Mobile Valeting | Limerick |
| Ocean & General Maritime Agencies | Dublin 18 |
| Ocean Acupuncture And Chinese Herbal Medicine | Wicklow |
| Ocean Air | Mayo |
| Ocean Asian Food & Noodle Box | Wexford |
| Ocean Beauty & Nail Bar | Wicklow |
| Ocean Bloom | Cork |
| Ocean Bloom | Cork |
| Ocean Blue Cards | Wicklow |
| Ocean Breakers | Dublin |
| Ocean Carpet Cleaning | Dublin 22 |
| Ocean City | Dublin |
| Ocean Construction | Dublin 24 |
| Ocean Court Restaurant&Takeaway | Donegal |
| Ocean Cove Hotel | Clare |
| Ocean Crest Marine | Galway |
| Ocean Crew | Cork |
| Ocean Crew Water Sports | Cork |
| Ocean Design Studio | Carlow |
| Ocean Design Studio | Cork |
| Ocean Digital Marketing | Clare |
| Ocean Directory | Cork |
| Ocean Drycleaning | Cork |
| Ocean Energy | Cork |
| Ocean Engineering | Dublin 12 |
| Ocean Enterprises | Wicklow |
| Ocean Escapes | Cork |
| Ocean Finance | Dublin 7 |
| Ocean Fitness | Galway |
| Ocean Fm | Sligo |
| Ocean Fm Radio | Sligo |
| Ocean Garden | Dublin 12 |
| Ocean Garden | Dublin 12 |
| Ocean Garden | Dublin 12 |
| Ocean Garden Chinese Restaurant & Takeaway | Mayo |
| Ocean Gloss Mobile Valeting | Cork |
| Ocean Hackneys | Galway |
| Ocean Harvest | Dublin |
| Ocean Healthcare | Dublin |
| Ocean Holiday Homes | Galway |
| Ocean Hotel | Waterford |
| Ocean House | Cork |
| Ocean Hygiene Supplies & Packaging | Galway |
| Ocean Inn Chinese Takeaway | Dublin 3 |
| Ocean Installation'S | Dublin |
| Ocean International Trade Company | Dublin 1 |
| Ocean Island Caravan Park | Wexford |
| Ocean Island Caravan Park | Wexford |
| Ocean Knowledge | Donegal |
| Ocean Leaves | Wexford |
| Ocean Lodge | Mayo |
| Ocean Medical | Kerry |
| Ocean Medical Ballybunion | Kerry |
| Ocean Mortgages | Dublin |
| Ocean Network Express | Dublin |
| Ocean Of Mercy Praying Ministry | Cork |
| Ocean Palace | Mayo |
| Ocean Palace | Mayo |
| Ocean Palace | Roscommon |
| Ocean Palace Chinese Takeaway | Meath |
| Ocean Palace Restaurant | Roscommon |
| Ocean Park | Wexford |
| Ocean Park Villas | Meath |
| Ocean Point Crafts | Wexford |
| Ocean Print | Wicklow |
| Ocean Property Management | Galway |
| Ocean Propertys | Cork |
| Ocean Recording Studios | Kerry |
| Ocean Sanctuary, Arranmore Island Holistic Escape | Donegal |
| Ocean Spirit Spa & Leisure | Mayo |
| Ocean To City | Cork |
| Ocean View | Donegal |
| Ocean View | Donegal |
| Ocean View | Donegal |
| Ocean View B & B | Kerry |
| Ocean View Beauty Salon & Nail Studio | Donegal |
| Ocean View Cleaners | Cork |
| Ocean View Hotel | Waterford |
| Ocean View Nursing Home | Kerry |
| Ocean'S | Dublin |
| Ocean-Cad | Kerry |
| Ocean.Ie | Dublin 7 |
| Oceana Day Spa | Waterford |
| Oceanatics Media | Dublin |
| Oceanconnects | Dublin |
| Oceandivers | Wicklow |
| Oceanenergy | Cork |
| Oceanic Europe | Dublin |
| Oceanic Jiujitsu | Cork |
| Oceanic Services | Galway |
| Oceanic Surf School | Waterford |
| Oceanico Silvercoast Properties | Wicklow |
| Oceanmay79 | Galway |
| Oceans Casino | Kerry |
| Oceansands Hotel | Sligo |
| Oceantree Security Services | Dublin 12 |
| Oceanus Flood Defence | Sligo |
| Oceanus Seafood | Wexford |
| Oceanview Financial Services | Cavan |
| Oceanwave Solutions | Mayo |
| Oceanwide Construction | Galway |
| Oceo Spa | Wexford |
| Oces | Dublin |
| Ocf | Limerick |
| Ocfob | Dublin 18 |
| Ocfpm | Cork |
| Och Construction Services | Dublin |
| Och Electrical & Facilities Services | Cork |
| Ocha Teppanyaki & Sushi Bar | Dublin |
| Oche Chinese Adn Thai Takeaway | Dublin 24 |
| Ochre | Cork |
| Ochre Wool | Dublin 2 |
| Ochsner Ireland | Monaghan |
| Oci | Galway |
| Ockt | Kerry |
| Ocm Construction | Wexford |
| Ocm Energy | Offaly |
| Ocm Ireland | Louth |
| Ocmc | Dublin |
| Ocmlaw | Dublin 2 |
| Oconcept | Kilkenny |
| Oconnell | Cork |
| Oconnor Consulting Ireland | Co Fermanagh Bt93 5fa |
| Oconnor Hackney Cab Service | Louth |
| Oconnorleadership | Sligo |
| Oconnorsolicitors.Ie | Leitrim |
| Ocore Research & Design | Dublin 6 |
| Ocorian (Ireland) | Dublin 2 |
| Ocp | Cork |
| Ocp Belgrave Ii Limited Partnership | Dublin |
| Ocp Belgrave Limited Partnership | Dublin 2 |
| Ocp Residential Ireland | Dublin 2 |
| Ocpm | Dublin |
| Ocpm | Dublin |
| Ocpm | Dublin |
| Ocpm | Dublin |
| Ocpm Estate Agents | Dublin |
| Ocram | Cork |
| Ocras | Donegal |
| Ocras Agus Tart | Kerry |
| Ocras Seafood & Snax | Cork |
| Ocs | Kerry |
| Ocs | Dublin 1 |
| Ocs | Offaly |
| Ocs | Westmeath |
| Ocs Consultants | Kerry |
| Ocs Food Hall Ballinasloe | Galway |
| Ocs Training And Recruitment | Offaly |
| Ocsc | Dublin 7 |
| Ocsc & Associates | Dublin 7 |
| Ocsc Engineers | Dublin 7 |
| Oct Engineering | Cork |
| Octabuild | Dublin 2 |
| Octagon | Dublin |
| Octagon | Dublin 14 |
| Octagon Computer Services | Kerry |
| Octagon Computer Services | Wicklow |
| Octagon Developments | Waterford |
| Octagon Ireland | Dublin 24 |
| Octahedron Publishing | Dublin 2 |
| Octalas | Cork |
| Octane Media | Wexford |
| Octane Track Days | Dublin |
| Octant Coaching | Dublin |
| Octavian Economics | Dublin |
| Octavian Public Affairs | Dublin |
| Octavian Public Relations | Dublin |
| Octavius Wines | Sligo |
| Octo Cleaning | Wexford |
| Octopus Services | Dublin 12 |
| Octopuscx | Dublin |
| Octopussy'S | Dublin |
| Ocuco | Dublin 15 |
| Ocular Jigsaw Website Solutions | Donegal |
| Ocwm Law Solicitors | Dublin 1 |