Ipatov () is a Russian masculine surname originating from the given name Ipaty or its short version Ipat; the feminine counterpart is Ipatova. The surname may refer to
* Alexander Ipatov (born 1993), Ukrainian chess grandmaster
* Dimitry Ipatov (born 1984), Russian ski jumper
* Pavel Ipatov (1914–1994), Soviet economist
* Pavel Ipatov (born 1950), Russian politician
*Sergei Ipatov (born 1952), Russian astronomer
** 14360 Ipatov, a main-belt asteroid, named after Sergey Ipatov
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