Tethys or Tethis may refer to: * Tethys (database), an online knowledge management system about the environmental effects of offshore renewable energy * ''Tethys'' (gastropod), genus of gastropods in the family Tethydidae * Tethys (moon), a natural satellite of Saturn * Tethys (mythology), a Titaness in Greek mythology * ''Thetys'' (salp), a genus of gelatinous sea salp * Tethys Ocean, a Mesozoic-era ocean between the continents of Gondwana and Laurasia *

Tethys Research Institute The Tethys Research Institute (official name: ''Istituto Tethys ONLUS'') is a non-profit research organisation founded in 1986 to support marine conservation through science and public awareness and by participating in the international conservatio ...

, a non-governmental scientific organisation based in Italy * "Tethys", a song from ''

The Ocean of the Sky ''The Ocean of the Sky'' is an EP by American rock band the Used, released on July 9, 2013. It is available as a digital download and in compact disc format. A vinyl format was released in September 2013. It peaked at No. 20 on the alternative c ...

'' by The Used * Tethys, the Japanese name for "Thetis", a boss character in ''

Mega Man ZX Advent ''Mega Man ZX Advent'', known in Japan as , is an action-platform video game developed by Inti Creates and published by Capcom for the Nintendo DS handheld game console. The game was first released in Japan on July 12, 2007; in North America on ...

'' * Tethys River, an interplanetary waterway in Dan Simmons's ''

Hyperion Cantos The ''Hyperion Cantos'' is a series of science fiction novels by Dan Simmons. The title was originally used for the collection of the first pair of books in the series, '' Hyperion'' and '' The Fall of Hyperion'', and later came to refer to the ...

See also