Binary system may refer to:
Binary number system, the base-2 internal "machine language" of computers Binary opposition, a bipolar distinction in philosophy, structuralism and critical theory Binary system (astronomy), a system of two celestial bodies on a mutual orbit Binary asteroid Binary star Contact binary Contact binary (asteroid) Double planet In chemistry, a system involving two steps, processes or substances Mixture Azeotrope Binary System, a music duo featuring rock musician Roger Miller
ca:Sistema binari pt:Binário