Companies catalogue
- James Melay Electrical, Waterford
- Jason Black, Donegal
- JC Exterior Cleaning, Dublin
- JD Edwards Training, Dublin 2
- JD Edwards Training, Dublin 2
- JG Digital Marketing Ltd. t/a Everblue Digital, Cavan
- Jh-Visual, Cork
- JKJ Repairs Service, Killarney
- JL Electric, Dublin
- JLK Electrical, Kilpedder
- JMD Miniature Design, Oetwil am See
- John Hoyne Plastering, Kilkenny
- Johnny Griffin Photography, Ballyheigue
- Johnny Griffin Photography, Tralee
- Just Drive Ireland, Dublin
- Just In Time Logistics & Distribution, Clonsilla