Jan Hajek or Jan Hájek may refer to:
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Jan Hajek (scientist)
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Jan Hájek (tennis)
Jan Hájek (born 7 August 1983) is a retired male professional tennis player from the Czech Republic. He reached the third round of the 2007 French Open and attained a career-high ATP singles ranking of World No. 71 in November 2006.
Career
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{{hndis, name=Hajek, Jan