Vajirananavarorasa

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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 Grand Palace, Bangkok, Thailand
Died	2 August 1921(1921-08-02) (aged 61) Wat Bowonniwet Vihara, Bangkok, Thailand
Religion	Buddhism
Nationality	Thai
School	Theravada, Dhammayuttika Nikaya
Dharma names	Manussanāga
Senior posting
Predecessor	Ariyavangsagatayana (Sa Pussadeva)
Successor	Jinavorn 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.