Mower County (named for John Edward Mower) is a county located in the U.S. state of Minnesota. As of 2000, it was home 38,603 people, 23,314 of whom live in its county seat of Austin. Lake Louise State Park is located in the southeast part of the county near Le Roy. The entire county is served by area code 507 and all ZIP codes in the county have 559 as the first three numbers.

In 1852 Jacob McQuillin and his family settled what was to become Mower County. By 1855 the area had enough people to merit official formation and on March 1, 1856 Minnesota Governor Willis A. Gorman (D) signed the act organizing Mower County. The county was named in honor of John Edward Mower, a member of the territorial legislature.