Aku is a given name, a Finnish version of the name Augustus. Notable people with the name include: Aku Hirviniemi, Finnish actor August "Aku" Kiuru, Finnish cross-country skier and Olympic medalist Aku Korhonen, Finnish actor Aku Louhimies, Finnish film director and screenwriter Aku Päiviö, Finnish Canadian journalist, poet and socialist Fictional characters Aku Ankka, (Finnish for Donald Duck), a Finnish weekly Disney comics magazine Aku, the main antagonist of the whole Samurai Jack series Finnish masculine given names Informal personal names