Last name ちぐさ (Chigusa 
, ちぐさ) , all over the world, is a very rare family name. The last name ちぐさ is characteristic of Brazil, where it is a very rare surname, Chile, where it is an extremely rare surname, and the United States. In absolute terms, it is commonest in Brazil, China, and the United States. More prevalently, ちぐさ is the forename as well as the last name.