Family name 昭久 (Akihisa 
, 昭久) , across the world, is a rare last name. The last name 昭久 is characteristic of Japan, where it is a rare surname, Czechia, and Singapore, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Japan, China, and Indonesia. Also, 昭久 is the forename as well as the last name.