Decima can refer to:
*
Decima gallery, a London-based arts organisation
*
Decima (game engine), a proprietary game engine by Guerrilla Games
*
Decima (mythology), a goddess in Roman mythology and one of the Parcae (Fates)
*
Decima Research, a Canadian polling company
*
Décima, a type of poetry with ten stanzas, rooted in Spanish literature
* Décima, the one-tenth tithe in Spain that is traditionally donated to a religious institution, the tithe itself called ''
diezmo'' in Spanish
*
Dejima, a foreign trading post off the coast of Nagasaki, Japan, during the 16th to 19th century
*
SB Decima, a Thames barge built in 1899
* The Decimas, a race of fictional creatures in the British science-fiction television series ''
Blake's 7''
*
Decima Flottiglia MAS, an Italian flotilla, with commando frogman unit, of the Regia Marina (Italian Royal Navy) created during the Fascist regime
{{disambiguation
