Family name Changklang (Changklang 
) , around the world, is a rare surname. The family name Changklang is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Anu, Thongchai, Kanokphit, Chayaporn, Niloobon, Teerapol, Thamnorachak, Tanyarat, Janthima, Khennaphum, Chawapon, Anchalee, Suchanan, Sararath, Nattida, Nattaya, Lumduan, Songsak, Saochao, Whanrutai, Prapai, Pensri, Achara, Somyot, Marlai, Marial, Dacha, Decha, Chamaiporn, and Panattawadee