Ostro is a southerly wind of the Mediterranean.
Ostro may also refer to:
People Hans Christian Ostrø (1968–1995), a Norwegian actor who was kidnapped and killed in Jammu and Kashmir in 1995 Steven J. Ostro (1946–2008), American radar astronomer
Video games Mario franchise Birdo, the Mario-franchise character erroneously referred to as "Ostro" in the Super Mario Bros. 2 instruction manual and end credits The Super Mario Bros. 2 common enemy whose name is transposed with that of Birdo in the game's instruction manual
Other meanings 3169 Ostro, an asteroid named for Steven J. Ostro , two destroyers of the Italian Royal Navy Ostrobothnia (administrative region), an administrational area in Finland.
See also Austro (disambiguation)