Eugene Tan Kheng Boon (born 18 February 1970) is a Singaporean academic who is currently an associate professor of law at the Singapore Management University.

Tan served as a Nominated Member of Parliament between 2012 and 2014.

[3] His specialisation includes constitutional and administrative law, and policy of ethnic relations in Singapore.

[4] Tan regularly writes for several media outlets in Singapore.

[5][6][7] He is also quoted regularly in all news sources within Singapore, and in major international press,[8][9][10][11][12][13] particularly on matters related to domestic politics, constitutional law and elections.