Aniruddha Mahathera (Nepali: अनिरुद्ध महाथेरा) (born Gaja Ratna Tuladhar) (15 December 1915 – 17 February 2003) was a Nepalese Buddhist monk and the Sangha Nayak (Patriarch) of Nepal from 1998 until his death in 2003.
He was named Gaja Ratna Tuladhar and belonged to a merchant family with a business house in Lhasa, Tibet.
His father engaged in trade in Tibet before becoming a Buddhist monk taking up the name Dhammalok Mahasthavir.
[4][5] After spending five years in Sri Lanka and becoming proficient in Sinhala, Pali, Sanskrit and English, he went to Kusinagar, India.
[8] Aniruddha spent 46 years in Lumbini and returned to Kathmandu in 1991 to become the abbot of Ananda Kuti Vihar at Swayambhu.