Cognomen Itthiphat (อิทธิพัทธ์ 
, Itthiphat , อิทธิพัฒน์ ) , throughout the world, is an extremely rare surname. The last name Itthiphat is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Itthiphat is the forename as well as the last name.
Maka, Khlamchin, Pengwandee, Pitakwong, Rungsuwan, Tangkrawrum, Tuayjaroen, Shewakoseth, Arunsurat, Amnatprasert, Boonleaing, Kositphon, Pintongpun, Thamaneewan, Trisitthichet, Wanitthirarot, Kanthawang, Pratoomwan, Wantanapark, Saowarattanayothin, Suwannakarn, Chakkrawuttrisin, Kaewchum, Buangern, Bundirake, Boonkaew, Lapha, Lowsi, Watha, Meerat, Sriaiem, Dawong, Chewakoseth, Boonlom, Bunsopa, Buangam, Rohitsathian, Ketkaew, Pechkua, Raksincharoensak, Janwong, Tantada, Takkaangkoon, Tahsriruan, Yasanop, Yotapukdee, Chomyart, Benjapat, Khirima, and Thammakitjawat