Kellner is an unincorporated community located in Portage and Wood counties, Wisconsin, United States.

The Portage County portion of Kellner is located in the town of Grant, while the Wood County portion is located in the town of Grand Rapids.

Kellner is located at the junction of County Highways U and WW 5.5 miles (8.9 km) east-southeast of Wisconsin Rapids.

This article about a location in Portage County, Wisconsin is a stub.

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