Sumanadasa Tilak Abeygunawardena (born 28 June 1953) (known as Sumanadasa Abeygunawardena) is a Sri Lankan astrologer, author, guest and commentator on radio and television news. He has appeared in a variety of publications (mostly alternative weekly newspapers). He had also served as the working Director for the National Savings Bank.
He was born on 28 June 1953 to a family in Deniyaya Matara District. He is the seventh son of Don Siyadoris Abeygunawardena and Jasin Korale Arachchige Somawathie. Don Siyadoris Abeygunawardena was a village committee Chairman of Morawaka. Sumanadasa Abeygunawardena has three elder sisters, three elder brothers & another two sisters younger to him. He was educated at Morawaka Central College in Deniyaya.
He married Meepage Chandra Girlie of Wanchawala in Akmeemana Electorate. Hansini Ruvanthika & Thilanka Sandamalie are his two daughters.