TWH or twh could refer to:Tai Dón language, a language of Vietnam, Laos, and China Tai Wo Hau station, Hong Kong; MTR station code Tennessee Walking Horse, a breed of horse Toronto Western Hospital, a hospital in Toronto, Canada Tung Wah Hospital, a hospital in Sheung Wan, Hong Kong Terawatt-hour (TWh), a measure of electrical energy, 1012 watt-hours The White House, the official residence and principal workplace of the president of the United States TWH Collectibles, a diecast scale model vehicle manufacturer.