T19 or T-19 may refer to:

Rail and transit Lines T19 line, of the Stockholm Metro

Rolling stock Electron T19, a Ukrainian trolley bus GER Class T19, a British steam locomotive FRA DOTX 219 (originally known as T-19), an American track geometry car

Stations Hirabari Station, Nayoga, Aichi, Japan Minami-Gyōtoku Station, Ichikawa, Chiba, Japan Nakazakichō Station, Osaka, Japan Shin-Sapporo Station, Hokkaido, Japan Shido Station, Sanuki, Kagawa, Japan

Other uses T-19, a Soviet tank T19 road (Tanzania)

Junkers T 19, a German trainer aircraft T19 Howitzer Motor Carriage, an American self-propelled gun