Nicole Sewell (born 1981) is a former professional tennis player from Australia.
A right-handed player from Perth, Sewell was most prominent on the doubles circuit, with 11 ITF titles and a best ranking of 107 in the world. She made most of her Grand Slam and WTA Tour main-draw appearances partnering Casey Dellacqua.
She is the daughter of former East Fremantle and Footscray footballer Jim Sewell.