A tortoise is a land-dwelling reptile, protected by a shell, of the order Testudines. Tortoise may also refer to: Arts, entertainment, and media Chelys, ancient Greek lyre meaning "Tortoise" or "Turtle" Tortoise (band), a US post-rock band formed in 1990 Tortoise (album), their debut 1994 release Tortoise Media, a British news media platform Tortoises, a 1921 short volume of D. H. Lawrence poetry, all later collected in Birds, Beasts and Flowers (1923) Tortoise Matsumoto (born 1966), lead singer of a Japanese rock band Ulfuls Geometry Tortoise coordinate, the foundation of the Eddington–Finkelstein coordinates Warfare Tortoise formation, a defensive formation employed by Ancient Rome Tortoise heavy assault tank, a British heavy assault gun See also Hare (disambiguation), for Tortoise and Hare stories TortoiseBzr, a GUI integrated Bazaar client for the Microsoft Windows platform TortoiseCVS, a GUI integrated CVS client for the Microsoft Windows platform TortoiseGit, a GUI integrated Git client for the Microsoft Windows platform TortoiseHg, a GUI integrated Mercurial client TortoiseSVN, a GUI integrated Subversion client for the Microsoft Windows platform Tortoiseshell (disambiguation) Turtle (disambiguation)