Julie Coin (French pronunciation: ; born 2 December 1982 in Amiens, France) is a professional French tennis player. Coin recorded the largest victory of her career by defeating the world's #1 ranked female singles player, and #1 seed, Ana Ivanović at the 2008 US Open. Her career high singles ranking is World No. 60, achieved on July 27, 2009. Her career high doubles ranking is World No. 81, achieved on September 21, 2009.
Her parents are Philippe and Doriane Coin. They were competitive team handball players.
Coin played at Clemson University, where she was an All-American, All-ACC, and ACC Player of the Year. She also holds numerous Clemson Women's Tennis records. Coin graduated from Clemson with a degree in mathematics.