Thomas R. Marshall House, also known as the Whitley County Historical Museum, is a historic home located at Columbia City, Whitley County, Indiana. It was built in 1874, and is a two-story, "L"-plan, frame dwelling. It was remodeled in 1895. It features a nearly full-with front porch supported by paired Doric order columns and a projecting two-story bay. It was the home of Indiana Governor and U.S. Vice President Thomas R. Marshall.
It was listed on the National Register of Historic Places in 1983.