Aarttu is a short form of the name Artturi, which is a Finnish form of the name Artur. There is no clear origin of the name Artur. It could be derived from the Roman surname Artorius or from Latin Arcturus or Greek Arktouros (Ἀρκτοῦρος). Aarttu could also be of Celtic or Nordic origin (originally Arnthor (Arnþórr)).
