Family name ฤทธิวัชร์ (ฤทธิวัชร์ 
) , all around the world, is a very rare surname. The cognomen ฤทธิวัชร์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ฤทธิวัชร์ is the forename as well as the last name.