Family name Yutthajak (Yutthajak 
) , around the globe, is an extremely rare cognomen. Much more frequently, Yutthajak is the forename as well as the last name.
Nojit, Pimkhot, Khiawaiy, Chuangphonngam, Thongyost, Wongthong, Saengpakdee, and Wongjongjaiharn