Surname Phatthamon (ภัทรมน 
, พัทธมน , Phatthamon ) , in all the world, is an extremely rare cognomen. The family name Phatthamon is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, Phatthamon is the forename as well as the last name.
Kanon, Jirachaiphong, Chanthawatwong, Wongthanayodsakun, Virojanapirom, Thamthawat, Thanomnuan, Khamdokrub, Yongboonnium, Ngamchana, Phuangpee, Kongkhambut, Boonliang, Jiamtragan, Jantalae, Laphanuwat, Ketwattha, Sangratkanjanasin, Malaiwong, Uiyamathiti, Jaykeaw, Saenmuk, Wandee, Phayo, Thongsawatwong, and Chiraphattananan