Family name เตชะฤทธิ์ (Teewarit 
, เตชะฤทธิ์ , Techarit ) , across the world, is a rare last name. The surname เตชะฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, เตชะฤทธิ์ is the forename as well as the last name.