Selenite may refer to:

Substances containing selenium A selenium-containing anion or ionic compound with the SeO32− anion: Selenite (ion), anion is a selenium oxoanion with the chemical formula SeO32− Selenous acid, the conjugate acid, with the formula H2SeO3 Salts of this anion: Silver selenite, an inorganic compound of formula Ag2SeO3 Sodium selenite, a salt, a colourless solid, and the most common water-soluble selenium compound Selenite broth, an enrichment medium for the isolation of Salmonella species

Other Selenite (gypsum), a variety of gypsum (CaSO4·2H2O) Selenites is a synonym of Zophos, a genus of land snails in the family Haplotrematidae Selenite Range, a mountain range in Pershing County, Nevada Selenite Peak, a summit in the Selenite Range, Nevada Selenite, a high class citizen that experienced space travel, from the videogame Event_0 Selenite, a fictional native inhabitant of the Moon; see Moon in science fiction#Life on the Moon Selenitic Age, a fictional place in the game Myst

es:Selenitas