Vajirananavarorasa (also spelled Wachirayan, Watchirayanawarorot, correct Pali spelling: Vajiraña?avarorasa, Thai: ????????????, full title Somdet Phramahasamanachao Kromphraya Vajirananavarorasa ??????????????????????????????????????? ) (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 Manu?yanagamanob (???????????????????????) ('he who is a naga among men').
Vajiraña?avarorasa is the name he received on a gold nameplate together with the Krommamuen rank on 16 March 1882.