Vajirananavarorasa

Somdet Phra Maha Samana Chao
Krommaphraya
Vajirañāṇavarorasa
Supreme Patriarch of Siam
In office
5 December 1910 – 2 August 1921
Personal
Born
Prince Manuṣyanāgamānob

(1860-04-12)12 April 1860
Died2 August 1921(1921-08-02) (aged 61)
ReligionBuddhism
NationalityThai
SchoolTheravada, Dhammayuttika Nikaya
Dharma namesManussanāga
Senior posting
PredecessorAriyavangsagatayana (Sa Pussadeva)
SuccessorJinavorn Sirivaddhana

Vajirananavarorasa (also spelled Wachirayan, Watchirayanawarorot, correct Pali spelling: Vajirañāṇavarorasa, Thai: วชิรญาณวโรรส, full title Somdet Phramahasamanachao Kromphraya Vajirananavarorasa สมเด็จพระมหาสมณเจ้ากรมพระยาวชิรญาณวโรรส ) (12 April 1860, Bangkok, Thailand - 2 August 1921, Bangkok, Thailand) was the tenth Supreme Patriarch of Thailand from 1910 to 1921. He helped to institutionalize Thai Buddhism.

Destined to become "the leading intellectual of his generation in Siam", in the words of the Thai historian David K. Wyatt (cited in Reynolds 1979:xiii), his royal name was Prince Manuṣyanāgamānob (พระองค์เจ้ามนุษยนาคมานพ) ('he who is a nāga among men'). Vajirañāṇavarorasa is the name he received on a gold nameplate together with the Krommamuen rank on 16 March 1882.