Jill N. Craybas (born July 4, 1974) is an American former professional tennis player. From the 2000 US Open to the 2011 US Open, Craybas competed in 45 consecutive Grand Slam main draws; her best result coming in the 2005 Wimbledon Championships where she reached the fourth round, which included wins over Marion Bartoli and Serena Williams. By the time she retired in 2013, she was one of the oldest players on the WTA Tour at 39 years of age, as well as the longest serving, having turned pro in 1996.