St. Augustine Catholic Church, also called Olde St. Augustine's, is a historic Catholic church in Philadelphia, Pennsylvania, United States. Consecrated in 1848, the Palladian-style church was designed by Napoleon LeBrun. It is listed on the National Register of Historic Places. The church was built to replace the Old St. Augustine Church which was completed in 1801. The first Order of Hermits of St. Augustine church founded in the United States, the original St Augustine housed the Liberty Bell's "Sister Bell".