Julien Mathieu (born 22 April 1982) is a former French tennis player.

Mathieu achieved a career-high ATP singles ranking of 562 on 24 September 2007.

He also reached a career-high ATP doubles ranking of 735 on 9 July 2001.

[1] Mathieu made his ATP main draw debut at the 2006 Grand Prix de Tennis de Lyon, where he qualified for the singles main draw.

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