Old St. Patrick's Church, also known as The Stone St. Patrick's Church, is a historic Roman Catholic church located near Gravois Mills, Morgan County, Missouri. It was built between 1868 and 1870, and is a one-story, rectangular masonry structure with a one-story, L-shaped stone addition. The church measures 24 feet, 3 inches, wide and 44 feet long.
It was listed on the National Register of Historic Places in 1979.