| Po Tisundimahrai | |
| King of Champa King of Panduranga | |
| Birth Date: | ? |
| Birth Place: | Champa |
| Death Date: | 1765 |
| Death Place: | Bal Pangdurang (Phan Rí) |
| Succession: | King of Champa |
| Reign: | 1763–1765 |
| Predecessor: | Po Rattiraydaputao |
| Successor: | Po Tisuntiraydapaghoh |
Po Tisundimahrai (died 1765) was a King of the Panduranga Kingdom of Champa (in Vietnamese, Thuân Thành) who ruled from 1763 to 1765. The name is also written Po Thathun da Moehrai. He led a brief reign under the domination of the Nguyễn lord of Đàng Trong (Southern Vietnam).
Po Tisundimahrai was a son of the previous ruler, Po Rattiraydaputao.[1] When his father passed away after a long reign of 28 years, Po Tisundimahrai succeeded him in the year of the Horse (1763) under the auspices of the Vietnamese ruler Võ Vương. He received the title of Kai Bait Mbin (Cai Bab Binh). His time was short as he passed away in the year of the Rooster (1765), having reigned for little more than one year. He was succeeded, after a brief interregnum, by a member of another branch of the dynasty, Po Tisuntiraydapaghoh.[2]