Erica Kathleen "Kathy" Horvath (born August 25, 1965) is an American former professional tennis player.

She played on the WTA Tour from 1981 to 1989, winning six singles titles and reaching a career-high ranking of world No.

[3] Horvath was the only player to defeat Martina Navratilova in the 1983 season (at the French Open), winning in the fourth round in three sets.

[4] Horvath had career victories over Navratilova, Andrea Jaeger, Manuela Maleeva, Gabriela Sabatini, Dianne Fromholtz, Claudia Kohde-Kilsch, Mary Joe Fernández, Betty Stöve, and Sylvia Hanika.

After her tennis career, she got her BS and MBA at the Wharton School of Business and then worked on Wall Street until 2003.