Firma T - Karmsund
- Trefadder AS
- Troi AS
- Thorstensen AS
- Toolpusher AS
- Toppen Hårstudio AS
- Toitas Systue
- Trygge Hus AS
- Thorstensen Trading AS
- Torvgaten 1 AS
- Toppen Velforening
- Toppen Velforening
- Takknemlig Helsekost AS
- Tomasveien 17
- Traa Bygg AS
- Tst Holding AS
- Tveit Media
- Thai Sansab AS
- Tirtuv Holding AS
- Touring Invest AS
- Tenvik Næringspark AS
- Thorbjørnsen Bygg AS
- Teqva Haugesund
- Tiv Holding AS
- Tomasveien 16
- Toma Facility Norge AS
- T Haaland Holding AS
- Tove Aase Aarekol
- Thermal Power Solution AS
- Tannlegekontor Marinella Bakken
- TM Kids Holding AS
- Tango Frisør Oasen
- T Lindstrøm Invest AS
- Torbjørn Isdahl Eiendom
- Tnb Oasen Karmøy AS
- Tove Kalstø Milje
- Tatec Trygve André Apeland
- Terapivakten Haugesund Elin Kvanvik
- Toma Facility Norge AS Avd Haugesund
- Telenor Norge AS Ucom Haugesund
- Trines Catering Trine Fjeldheim Hope