Matara Kithalagama Sri Seelalankara Thera (also known as Dimbulagala Hamuduruwo) was a Sri Lankan Buddhist monk who lived in the 20th century in Sri Lanka. He was the pioneer in restoring the ancient Buddhist monastery Dimbulagala Raja Maha Vihara in the 1950s and was the chief incumbent of the monastery for around four decades. He lived a modest life and spent his life for the development of the ancient monastery and for the upliftment of the poor peasants who lived in the surrounding areas of the Polonnaruwa District in North Central Province.