Surname วงค์ฤทธิ์ (วงค์ฤทธิ์ 
) , worldwide, is a very rare cognomen. The family name วงค์ฤทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, วงค์ฤทธิ์ is the forename as well as the last name.