Last name ชำนาญยุทธ (Chamnanyut 
, ชำนาญยุทธ) , all around the world, is a very rare surname. The cognomen ชำนาญยุทธ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ชำนาญยุทธ is the forename as well as the last name.