(US) Initialism of fixed base operator, an aircraft service center at an airport.

(US, finance) Initialism of for the benefit of (e.g., on a check or other financial instrument sent to a custodian).

Abbreviation of Facebook official.

plural of FBS

(medicine) Initialism of full blood count. / Full Business Case

Initialism of Fox Broadcasting Company.

fast breeder reactor

plural of FBO

plural of FBO

(aviation) Initialism of fly-by-wire.