Family name ฤทธินี (Ritnee 
, ฤทธินี 
) , throughout the world, is a very rare last name. The cognomen ฤทธินี is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ฤทธินี is the forename as well as the last name.
เจือ, ประยูร, ทองพูล, ยุทธนา, and ณัฏฐิกานต์