Withana Pathiranage Milan Sajith Jayathilaka (born 1 August 1981) is a Sri Lankan politician and Member of Parliament. Jayathilaka was born on 1 August 1981. He was a member of Dompe Divisional Council. He contested the 2020 parliamentary election as a Sri Lanka People's Freedom Alliance electoral alliance candidate in Gampaha District and was elected to the Parliament of Sri Lanka.