TETCO is a Texas-based distributor of gasoline. TETCO was founded by Tom E. Turner (hence the "TETCO" brand) and supplies a network of more than 550 company-owned and dealer-owned gas stations in Texas and six other other states in the South and Southwest. The company supplies unbranded and branded gasoline stations with a range of products. Brands provided include RAM, Phillips, CITGO, Shell, Valero, Conoco, Exxon, Texaco, Shamrock, and Chevron. The family of Tom Turner also own bulk chemical transporter Mission Petroleum Transport, fuel distributor United Pump Supply, construction firm V.K. Knowlton Construction & Utilities., and San Antonio grocery Green Fields Market.