Livens may refer to:
George Henry Livens (1886–1950), British mathematician Jānis Līvens (1884–?), Latvian cyclist who competed in the 1912 Summer Olympics William Howard Livens (1889–1964), British soldier and inventor of chemical and flame weapons
See also Livens Projector, a mortar-like weapon used for gas warfare in World War I Livens Large Gallery Flame Projector, a flamethrower used in World War I Fort Livén, a 16th century fort in what is now Chile