The Most Venerable Wewaldeniye Medhalankara Thera () (7 December 1909 â 30 August 2012) was a Sri Lankan Buddhist monk who was the 12th Maha Nayaka of Ramanna Nikaya and the chief incumbent of the Shasanawardhana Pirivena, Mirigama. Following his demise, he was succeeded by Most Ven. Napane Pemasiri Thera as the Maha Nayaka of Ramanna Nikaya.