Rathika Sitsabaiesan (Tamil: இராதிகா சிற்சபையீசன்; born December 23, 1981) is a former Canadian politician who was the member of Parliament (MP) for Scarborough—Rouge River from 2011 to 2015 as a member of the New Democratic Party (NDP). Sitsabaiesan is the first Tamil to be elected to the House of Commons.