T. Harlan and Helen Montgomery House is a historic home located at Seymour, Jackson County, Indiana. It was built between 1922 and 1929, and is a two-story, Dutch Colonial Revival style frame dwelling with a gambrel roof. It consists of a main rectangular block with a small portico, side porch, rear ell, and porte cochere. Also on the property is a contributing garage constructed in 1926.

It was listed on the National Register of Historic Places in 2010.