Last name Celtae (Celt 
, Kelt 
, Celte 
) , in the world, is a rare surname. The family name Celtae is characteristic of Isle of Man, where it is quite a rare surname, Estonia, and New Zealand, where it is a rare surname. In absolute terms, it is commonest in the United States, Turkey, and the United Kingdom. Likewise, Celtae is the forename as well as the last name.