JOSA refers to the Journal of the Optical Society of America.
Josa is a municipality in Aragon, Spain.
Josa may also refer to: Josa de Cadí, a village in Josa i Tuixén, Catalonia, Spain Josa, a genus of spiders in the family Anyphaenidae a personal name: Mirel Josa (born 1963), Albanian football player and coach Josa Lee (1911–1967), Irish hurler Josaline "Josa" Enriquez-Valencia, a character from Abot-Kamay na Pangarap
See also Isabel de Josa (1508–1575), Catalan writer La Josa (born 1976), Mexican singer and athlete Jossa (disambiguation) Josa in Korean postpositions