Tierra may refer to:
Astronomy Earth in the Spanish and Asturian language
Computing and games Tierra (computer simulation), a computer simulation of life by the ecologist Thomas S. Ray Tierra Entertainment, now known as AGD Interactive, a non-profit game company specializing in remakes of classic adventure games by Sierra Entertainment
Film Tierra (film), a 1996 movie by the Spanish filmmaker Julio Medem
Music Tierra (band), a Latin R&B band from the 1970s and 1980s
Albums Tierra (Tierra album), a 1973 album by Tierra Tierra (L'Arc-en-Ciel album), a 1994 album by the Japanese rock band L'Arc-en-Ciel
See also Tiara, a type of crown or headpiece