| Honorific-Prefix: | Somdet Phra |
| Ariyavamsagatañāṇa (Pun Puṇṇasiri) | |
| Honorific-Suffix: | Somdet Phra Sangharāja Sakalamahāsaṅghapariṇāyaka |
| Birth Name: | Pun Sukcharoen |
| Dharma Names: | Puṇṇasiri |
| Birth Date: | 1896 |
| Birth Place: | Song Phi Nong, Suphan Buri, Thailand |
| Death Date: | 7 December 1973(aged 77) |
| Death Place: | Bangkok, Thailand |
| Nationality: | Thai |
| Religion: | Buddhism |
| School: | Theravada, Maha Nikaya |
| Office1: | 17th Supreme Patriarch of Thailand |
| Term Start1: | 21 July 1972 |
| Term End1: | 7 December 1973 |
| Predecessor: | Ariyavangsagatayana (Chuan Utthayi) |
| Successor: | Jinavajiralongkorn |
Somdet Phra Ariyavangsagatayana Somdet Phra Sangharaja, or simply known as Ariyavangsagatayana VII, was briefly the 17th Supreme Patriarch of Thailand (1972–1973, 2515–2516 Thai calendar).[1] He was born in 1896 as Pun Punnasiri in Song Phi Nong District, Suphan Buri Province. He was a member of the Chetupon Temple. He reigned only for 1 year and 4 months. His predecessor was Ariyavangsagatayana, 16th Supreme Patriarch of Thailand and his successor was Jinavajiralongkorn (Vasana Vasano).
Somdejphrasangkharach XVII Hospital, the main hospital of Song Phi Nong District, is named after his title.
