Somdet Phra Ñāṇavajirottama (Thai: สมเด็จพระญาณวชิโรดม; RTGS: Somdet Phra Yanawachirodom; born Viriyang Boonteekul, 7 January 1920 – 22 December 2020), also known as Luang Phor Viriyang Sirindharo (Thai: วิริยังค์ สิรินฺธโร), was a Thai monk, Meditation Master and Patriarch of the Dhammayuttika Nikaya Order in Canada. He was born in Saraburi, Thailand.