Abeykoon () is a Sinhalese surname. Notable people with the surname include:
Deepika Abeykoon (born 1989), Sri Lankan netball player M. Walter F. Abeykoon, Ceylonese civil servant and Inspector General of Police P. B. Abeykoon, Sri Lankan civil servant Sampath B. Abeykoon, Sri Lankan puisne justice of the Supreme Court Sarath Abeykoon, Sri Lankan academic and politician Srilal Abeykoon (1953–2020), Sri Lankan actor and singer Yupun Abeykoon (born 1994), Sri Lankan track and field athlete