Hayreddin Barbarossa (1478-1546), a privateer and Ottoman admiral who dominated the Mediterranean for decades.

Frederick I "Barbarossa"

A series of comic books: Redbeard (comics)

Red Beard, the first British tactical nuclear weapon.

The 1965 Kurosawa film, Red Beard.

Aruj (1474-1518), a Mediterranean pirate and later Ottoman naval commander known to Europeans as Redbeard or Barbarossa, and the older brother of Hayreddin Barbarossa.