This is the first verified record of a living humpback whale (Megaptera novaeangliae) in the waters of Sri Lanka. This juvenile male was eight to nine meters in length and alone, sighted south of Mirissa. The whale traveled past Dondra Head and headed east along the coast. A comparison of the fluke with records the non-migratory humpback population in Oman did not result in a match. There is no obvious place where this humpback whale could have come from or have been going to.