Eleanor Wong Siew Yin (born 6 February 1962) is a Singaporean playwright, poet, lawyer and legal academic.
She is an associate professor of law at the National University of Singapore, where she is vice dean of student affairs and director of the legal skills programme.
A graduate of the National University of Singapore (NUS) Faculty of Law as a Public Service Commission merit scholar, Wong won the Best Oralist (Championship Round) at the 1985 Philip C. Jessup International Law Moot Court Competition, where she was a member of the victorious NUS moot team.
She has anchored a television current affairs show After Hours, and used to host a radio programme, Sex, Rights & Videotape.
In 2015, Wills & Secession was selected by The Business Times as one of the "finest plays in 50 years" alongside productions by Goh Poh Seng, Michael Chiang and Alfian Sa'at and others.