County Index - Co Tyrone
- 121 Tutoring Services - Co Tyrone - Dungannon
- 1ST Alert Alarm Systems Ltd. - Co Tyrone - Dungannon
- 313 Drum Road - Co Tyrone - Cookstown
- A & B Fire Equipment - Co Tyrone - Omagh
- A A Hydraulics Ltd - Co Tyrone - Dungannon
- A C Trading Ltd. - Co Tyrone - Omagh
- A D G Young - Co Tyrone - Castlederg
- A D P Architects - Co Tyrone - Omagh
- A E Duncan Brakes - Co Tyrone - Omagh
- A E Kenwell & Sons - Co Tyrone - Omagh
- A G o'Neill Ltd - Co Tyrone - Omagh
- A J O Crawford - Co Tyrone - Strabane
- A N Irwin & Son Ltd - Co Tyrone - Dungannon
- A S Ballantine Ltd. - Co Tyrone - Strabane
- A T H Engineering Services - Co Tyrone - Cookstown
- A V C - Co Tyrone - Strabane
- A W S - Co Tyrone - Dungannon
- A-One Feeds Supplements - Co Tyrone - Dungannon
- A1 Power Systems Ltd - Co Tyrone - Dungannon
- Aa Precision Ltd - Co Tyrone - Dungannon
- Aaron Burke - Co Tyrone - Omagh
- Academy Graphics - Co Tyrone - Dungannon
- Ace Plantline Ltd. - Co Tyrone - Dungannon
- Acorn Furniture Manufacturers - Co Tyrone - Aughnacloy
- Adams Poultry - Co Tyrone - Omagh
- Advernet Company Ltd - Co Tyrone - Omagh
- Agri Spares Omagh Ltd - Co Tyrone - Omagh
- Agri-Power - Co Tyrone - Omagh
- Agricola Solutions - Co Tyrone - Strabane
- Aiden Caldwell Plant & Tractor Sales - Co Tyrone - Strabane
- Aiken's Caravan Sales-Hire Ltd - Co Tyrone - Castlederg
- Aislings Textile Studio - Co Tyrone - Omagh
- Alan J Kyle - Co Tyrone - Omagh
- Alan McKelvey - Co Tyrone - Strabane
- Alan Rooney - Co Tyrone - Cookstown
- Albert John Armstrong - Co Tyrone - Omagh
- Alexander Mills - Co Tyrone - Dungannon
- Alfred Enerson - Co Tyrone - Dungannon
- Alfred Watterson - Co Tyrone - Cookstown
- Alg Blinds - Co Tyrone - Dungannon
- Amptecs Eco Ltd - Co Tyrone - Cookstown
- Anaconda Equipment International Ltd - Co Tyrone - Dungannon
- Andrew & Joseph Mills - Co Tyrone - Omagh
- Andrew Coulter Architecture - Co Tyrone - Omagh
- Andrew McMullan - Co Tyrone - Dungannon
- Andrew Sproule - Co Tyrone - Castlederg
- Annaghmore Fuels - Co Tyrone - Cookstown
- Annaghmore Machinery Sales - Co Tyrone - Dungannon
- Anser Laboratories Ltd - Co Tyrone - Dungannon
- Anthony Gallagher - Co Tyrone - Omagh
- Anthony Mackle Ltd - Co Tyrone - Dungannon
- Antique Fishing Tackle Ireland Ltd - Co Tyrone - Strabane
- Apcon - Co Tyrone - Strabane
- Apex Fastening Solutions - Co Tyrone - Dungannon
- Aras Mhuire - Co Tyrone - Dungannon
- Arch-Aid Design Group - Co Tyrone - Omagh
- Ardboe Coldstore Ltd. - Co Tyrone - Dungannon
- Ardboe Manufacturing Co. Ltd. - Co Tyrone - Dungannon
- Argento - Co Tyrone - Omagh
- Arlene Jardine - Co Tyrone - Dungannon
- Armada Solutions Ltd - Co Tyrone - Cookstown
- Arolco Ireland Ltd - Co Tyrone - Castlederg
- Ashfield & Wilson - Co Tyrone - Dungannon
- Ashlock Door Systems Ltd - Co Tyrone - Dungannon
- Aughavey Computers - Co Tyrone - Cookstown
- Augher Co-Operative Agricultural & Dairy Society Ltd. - Co Tyrone - Augher
- Aughnacloy Tile Centre Ltd - Co Tyrone - Aughnacloy
- Aunt Jane's - Co Tyrone - Omagh
- Autotank International Ltd - Co Tyrone - Dungannon
- Axon Power and Control Ltd - Co Tyrone - Dungannon
- B Grimes - Co Tyrone - Omagh
- B & B Construction (Castlederg) Ltd - Co Tyrone - Castlederg
- B A Engineering Ltd - Co Tyrone - Cookstown
- B D Foods - Co Tyrone - Dungannon
- B G I Direct Furniture Fittings - Co Tyrone - Omagh
- B Graham - Co Tyrone - Clogher
- B Matchett & Sons - Co Tyrone - Dungannon
- B Neeson - Co Tyrone - Cookstown
- B O'Neill Contracts - Co Tyrone - Dungannon
- B.M.C. Security Systems (N.I.) Ltd - Co Tyrone - Strabane
- Ba Kitchen Components Ltd. - Co Tyrone - Cookstown
- Baby Essentials - Co Tyrone - Omagh
- Babytalk Magaxine - Co Tyrone - Dungannon
- Ballylurgan Co-Operative Agricultural Society Ltd - Co Tyrone - Fivemiletown
- Baronscourt Nurseries - Co Tyrone - Omagh
- Barrack Hill Quarries Ltd. - Co Tyrone - Dungannon
- Barrett Electrical Contracts Ltd. - Co Tyrone - Omagh
- Barrett Wholesale Ltd - Co Tyrone - Omagh
- Barretts - Co Tyrone - Omagh
- Barry Maguire Architect - Co Tyrone - Dungannon
- Bassetts (Omagh) - Co Tyrone - Omagh
- Beatty Bros - Co Tyrone - Clogher
- Beaverlodge Farms - Co Tyrone - Strabane
- Bell - Co Tyrone - Cookstown
- Bf Meats - Co Tyrone - Dungannon
- Bizz Cards Printing - Co Tyrone - Omagh
- Black Interiors - Co Tyrone - Dungannon
- Blue Splat Ltd - Co Tyrone - Strabane
- Bluegrass Horse Feeds Ltd (AN Irwin and Sons) - Co Tyrone - Dungannon
- Bmi Trailers Ltd - Co Tyrone - Dungannon
- Bob Bell Engineering - Co Tyrone - Cookstown
- Bogues Jewellers - Co Tyrone - Omagh
- Bohemian Craft - Co Tyrone - Dungannon
- Bondsglen Quarry - Co Tyrone - Strabane
- Boyd Bedding - Co Tyrone - Omagh
- Brady Engineering - Co Tyrone - Dungannon
- Brain Paine - Co Tyrone - Cookstown
- Bramley Apple Bakery Ltd - Co Tyrone - Dungannon
- Bremar Interiors - Co Tyrone - Cookstown
- Brendon P Collins - Co Tyrone - Omagh
- Brian Keys Tractors Ltd - Co Tyrone - Omagh
- Brian Morris (Construction) Ltd - Co Tyrone - Cookstown
- Brian Taylor - Co Tyrone - Cookstown