Ramanna Nikaya (or Ramanya Nikaya) is one of the most orthodox Buddhist orders in Sri Lanka. It is the equivalent of Thammayut Nikaya, a similar order in Thailand.
Mahanayaka of the Sri Lanka Ramanna Nikaya most venerable Weweldeniye Medhalankara Thera passed away at the age of 103 in 2012.
- Siam Nikaya
- Amarapura Nikaya
- Sri Lankan Buddhism