John Wormley House, also known as the Valentine Hummel House, is a historic home located at Wormleysburg in Cumberland County, Pennsylvania. It was built about 1815, and is a 2 1/2-story, limestone building with a gable roof, three bays wide and two bays deep. It has a two-story rear frame addition. It faces the west bank of the Susquehanna River. It is in a half-Georgian style. It was built by John Wormley, Jr., founder of Wormleysburg. It was listed on the National Register of Historic Places in 1976.