Surname Хотару (Hotaru 
, Хотару) , in the entire world, is a rare last name. The surname Хотару is characteristic of Romania, where it is a rare surname, Indonesia, where it is a very rare surname, and Vietnam. Not in comparison with a country's population, it is the most numerous in Indonesia, Romania, and China. More frequently, Хотару is the forename as well as the last name.