Entex may refer to:
Entex Industries, a defunct toy and electronic game manufacturer Entex Adventure Vision, a self-contained cartridge-based video game console Entex Select-A-Game, a handheld game system Entex Energy, an oil and gas firm; now CenterPoint Energy Entex Building (disambiguation), multiple uses Fenthion, sold under the trade name Entex Guaifenesin/phenylephrine, trade name Entex, a cold medicine