Family name Promkhum (Promkhum 
) , globally, is a very rare cognomen. The last name Promkhum is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Nuch, Apichatpong, Sonthichai, Prompipat, Chadaporn, Manusporn (Pia), Waraporn, Peraphat, Akaradet, Dangfun, Pornpun, Apidate, Atchara, Sairung, Pichet, Pranee, Nusra, Sunan, Patcharapa, and Pongsaphat