Greater Saint John Cathedral
11425 Old Marlboro Pike
Upper Marlboro, MD 20772

Telephone: 301-574-5100 • Fax: 301-574-5160 
Email: webministry@saintjohn.net

Office Hours: 

• Tuesday, Wednesday and Friday - 9 a.m. to 5 p.m.
• Thursday - 9 a.m. to 7 p.m.
• Saturday - 9 a.m. to 1 p.m.