Cognomen ประสิทธิไกร (Pasitkrai 
, ประสิทธิไกร ) , globally, is a very rare family name. The family name ประสิทธิไกร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ประสิทธิไกร is the forename as well as the last name.