Most Venerable Nauyane Ariyadhamma Mahāthēra‍ (Sinhala: අතිපූජ්‍යය නා උයනේ අරියධම්ම මහා ථේර, 24 April 1939  – 6 September 2016) was a Sri Lankan bhikkhu (Buddhist monk) and a senior meditation teacher.

He was the spiritual advisor of the Śrī Kalyāṇī Yogāśrama Saṃsthā, and for many years resided at the Nā Uyana Āranya.

In 2011 he moved to Meetirigala Dharmayatanaya to help revitalize this long-standing place of learning and dhamma practice.

Ariyadhamma Mahāthēra was born on 24 April 1939 to a traditional Buddhist family in Kurunegala and was educated at the Government School of Nilagama.

His father was a supporter of Most Venerable Vigoda Bodhirakkhitha Mahāthēra, who was resident at the nearby Nā Uyana Āranya forest monastery.

The close relationship with the monks from childhood inspired his decision to ordain, and he trained under Bōdhiraḳḳhitha Mahāthēra in 1956 as an upasaka.

Matara Sri Nanarama Mahathera as his upajjhaya and received upasampada on 15 July 1959 with Ven.