Heather Ann O'Reilly (born January 2, 1985) is an American former professional soccer player who played as a midfielder.
She played for the United States women's national soccer team (USWNT), with whom she won three Olympic gold medals and a FIFA Women's World Cup.
From 2003 to 2006, she played college soccer for the University of North Carolina at Chapel Hill.
During her club career, O'Reilly played for the New Jersey Wildcats (USL W-League), Sky Blue FC (WPS), Boston Breakers (WPSL Elite and NWSL), FC Kansas City (NWSL), Arsenal Ladies (FA WSL), and the North Carolina Courage (NWSL).Upon her retirement from international play in September 2016, she is one of the world's most capped soccer players with over 230 international appearances to her name.
She is a skilled flank player, currently tied for fifth with Julie Foudy in USWNT history for assists.
She is also the eighth most capped player in USWNT history.
On October 27, 2019, she played her final match for the North Carolina Courage before retiring, winning the 2019 NWSL championship.