- Diocese of Shreveport
- Diocese of Sioux City
- Diocese of Sioux Falls
- Diocese of Spokane
- Diocese of Springfield in Illinois
- Diocese of Springfield in Massachusetts
- Diocese of Springfield-Cape Girardeau
- Diocese of St Petersburg
- Diocese of St. Augustine
- Diocese of Steubenville
- Diocese of Stockton
- Diocese of Superior
- Diocese of Syracuse
- Diocese of Toledo
- Diocese of Trenton
- Diocese of Tucson
- Diocese of Tulsa
- Diocese of Tyler
- Diocese of Venice
- Diocese of Victoria
- Diocese of Wheeling-Charleston
- Diocese of Wichita
- Diocese of Wilmington
- Diocese of Winona
- Diocese of Worcester
- Diocese of Yakima
- Diocese of Youngstown