The Jennings–Gallagher House is an historic American building that is located at the corner of Fifth and Wood Streets, at 429 Wood Street, in California, Pennsylvania.

It retains its original woodwork, stained glass and fireplaces.

A colonial revival-style house, it was built in 1903 by Jonathan Winnett Jennings, a Methodist minister from the Monongahela Valley.

Charles Gallagher was the general superintendent of the Allied Chemical Corporation at Newell, Pennsylvania, a director of People's National Bank and a Trustee of California University of Pennsylvania.

The house is designated as a historic residential landmark/farmstead by the Washington County History & Landmarks Foundation.