Celerity, or celeritas (Latin), may refer to:
Speed, quickness
Science and technology Speed of light, celeritas Celerity Computing Inc., defunct San Diego, California vendor Celerity IT, a Virginia-based web development consulting group Phase velocity, speed of propagation of a wave Proper velocity, an alternative way of measuring motion in relativity
Transport USS Celeritas (SP-665), a United States Navy patrol vessel Mirage Celerity, an American two-seat cabin monoplane Celerity (carriage)
Sport FC Celeritas Straßburg Feyenoord, a Dutch football club in Rotterdam, known as Celeritas 1909–1912 Celeritas, a Dutch football club in Kampen, active in 1893; see Celeritas, a Dutch football club in Rotterdam, active in 1901; see
See also
Celery Celebrity Celer (disambiguation)