Last name リチャ (Richa 
, リチャ) , in the world, is a common surname. The last name リチャ is habitual in Lebanon, where it is quite a common surname, Panama, where it is quite a rare surname, and Algeria. Not in comparison with a country's population, it is commonest in India, Lebanon, and Indonesia. More prevalently, リチャ is the forename as well as the last name.