Biology, the branch of science dealing with the study of life

bio the prefix,meaning life.

Biographies

Choudenshi Bioman, a Japanese television series.

Bilbao Airport (IATA airport)

Binocular Indirect Opthalmoscope, a medical instrument used to examine the interior of the eye

Bio, Lot, a commune of the Lot département, in southwestern France

Break it Off, a single.

Internet slang for "Biology break", also known as going to the bathroom. Typically someone will type "brb bio", meaning "be right back, taking a bathroom break"

Bring it On, a film

Bedford Institute of Oceanography

British Informatics Olympiad, an annual programming competition in Great Britain.

Bio (graffiti artist), a graffiti artist

Biotechnology Industry Organization

Biochemistry, the branch of Chemistry dealing with Metabolic reactions

Bio., a Australian Pay-TV Channel

Bio is a set of Black Magic spells that causes Poison in the Final Fantasy video game series

BIO is an abstraction library used by OpenSSL to handle communication of various kinds, including files and sockets, both secure and not