The Karabisianoi, sometimes anglicized as the Carabisians, are the mainstay of the Byzantine navy from the mid-seventh century until the early eighth century.

The name derives from the Greek karabos or karabis for "ship", and literally means "people of the ships, sea-men".

The Karabisianoi are the first permanent naval establishment of the Byzantine Empire, formed to confront the Muslim expansion at sea.

They are disbanded and replaced with a series of maritime themes some time in 718–730.