Last name هوتارو (Hotaru 
, هوتارو) , around the globe, is a rare surname. The cognomen هوتارو is habitual in Romania, where it is a rare surname, Indonesia, where it is a very rare surname, and Vietnam. In absolute terms, the name is most common in Indonesia, Romania, and China. More frequently, هوتارو is the forename as well as the last name.