Cognomen Benchamas (Benchamas 
) , all over the world, is an extremely rare last name. The family name Benchamas is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, Benchamas is the forename as well as the last name.
Suwan, Nimsuwan, Yooprasert, Yeelungka, Suriyoung, Seeyangnok, Somhwangsakun, Chaiyamas, Chuachamsai, Bangkakul, Promthong, Poomratthanaskul, Phikunngam, Rachatabut, Ronpairin, Gunsriwiang, Chirachakhrit, Chunpradab, Khlongcherngpuen, Thitibordin, Thongpreang, Tangwongsombat, Totanawat, Therdteanwong, Leelaporn, Rahedharn, Panya, Upala, Sawang, Somjit, Buasri, Kongma, Pankan, Takeaw, Inkaew, Saywong, Tangwongmongkhon, Suksing, Chainam, Chaijan, Pattama, Hanuvong, Umthong, Muktaragosa, Saehwang, Subanpong, Srangsok, Boonsong, Soinamtip, and Kanchanamanee