St. Anthony's Catholic Church is a parish church in the Diocese of Davenport. The parish complex is located in downtown Davenport, Iowa, United States, at the corner of Fourth and Main Streets. It is the first church congregation organized in the city of Davenport and the second Catholic congregation, after St. Raphael's in Dubuque, in the state of Iowa. The parish buildings were listed on the National Register of Historic Places as St. Anthony's Roman Catholic Church Complex in 1984. The designation includes the church and the former school building, which is the parish's original church building and the oldest standing church building in Iowa. The designation also included the rectory, which was partially torn down in 2009. The complex was also listed on the Davenport Register of Histori