National Catholic Reporter Publishing Company: Graphics
- GNCR Image(s) : Fr. Denis J. O'Callaghan
- GNCR Image(s) : Father Jose O'Callaghan
- GNCR Image(s) : Gov. Mike O'Callaghan
- GNCR Image(s) : Sister Rose Marie O'Callahan, MM and ship
- GNCR Image(s) : Father Daniel C. O'Connell
- GNCR Image(s) : Laurence J. O'Connell
- GNCR Image(s) : Dr. Lillian O'Connor, HEW
- GNCR Image(s) : Roc O'Connor, Jesuit Father
- GNCR Image(s) : Bishop William Aloysius O'Connor, Springfield, Ill
- GNCR Image(s) : Msgr. J. Paul O'Connor, USCC Advisory Council
- GNCR Image(s) : Bishop William P. O'Connor (Died 7/13/1973)
- GNCR Image(s) : Flannery O'Connor (Died August 3, 1964)
- GNCR Image(s) : Rev. David O'Connor
- GNCR Image(s) : Father John V. O'Connor
- GNCR Image(s) : Fr. Norman O'Connor
- GNCR Image(s) : Father Patrick O'Connor
- GNCR Image(s) : Daniel Joseph O'Conor (Died 12/19/1968)
- GNCR Image(s) : Very Rev. George F. O'Dea, Josephite Superior General
- GNCR Image(s) : Rev. Robert Odean
- GNCR Image(s) : Mr. and Mrs. Josef Odlozil
- GNCR Image(s) : Fr. Joseph O'Donnell
- GNCR Image(s) : Joe O'Donoghue
- GNCR Image(s) : Gov. Richard Ogilvie, Governor of Illinois
- GNCR Image(s) : Desmond O'Grady
- GNCR Image(s) : Harry J. O'Haire
- GNCR Image(s) : Daniel J. O'Hanlon, S.J.
- GNCR Image(s) : Daniel J. O'Hanlon, S.J.
- GNCR Image(s) : Joan Ohanneson
- GNCR Image(s) : Father Michael O'Hara, Detroit inner city priest
- GNCR Image(s) : Father Abraham Ojefua
- GNCR Image(s) : General Odumegwu Ojukwu
- GNCR Image(s) : Sr. Mary Bernice O'Keefe, CCVI- USCC Advisory Council
- GNCR Image(s) : Jeremiah O'Keefe
- GNCR Image(s) : Sister Jeanne O'Laughlin
- GNCR Image(s) : King V Olav, King of Norway
- GNCR Image(s) : Donna Old Elk
- GNCR Image(s) : Rev. Chester Oleszewski
- GNCR Image(s) : Sister Mary Oliva, RSM
- GNCR Image(s) : Dr. James R. Oliver, President Louisiana Council on Human Relations
- GNCR Image(s) : Msgr. John J. O'Looney
- GNCR Image(s) : Bernadette Olowo, First woman representative to Vatican, from Uganda
- GNCR Image(s) : Dr. C. Arlid Olsen, NCCJ
- GNCR Image(s) : Father Thomas F. Olsen
- GNCR Image(s) : Doctor Arnold Olson
- GNCR Image(s) : Dr. Bernhard E. Olson
- GNCR Image(s) : Robert E. O'Malley, Medal of honor winner
- GNCR Image(s) : Fr. Thomas P. O'Malley, S.J.
- GNCR Image(s) : Mother M. Omer
- GNCR Image(s) : Aristotle Onassis (Died March 15, 1975)
- GNCR Image(s) : Jacqueline Kennedy Onassis
- GNCR Image(s) : Msgr. William Onclin, Cosecretary of Vatican commision of renewing canon law
- GNCR Image(s) : Everett P. O'Neal, of Kansas City
- GNCR Image(s) : Sr. Anne O'Neil
- GNCR Image(s) : Arthur J. O'Neill, Bishop
- GNCR Image(s) : Fr. William O'Neill, Cleveland-graphoanglyst
- GNCR Image(s) : Father Joseph J. O'Neill, MM
- GNCR Image(s) : Capt. Terence O'Neill, Prime Minister of Northern Ireland
- GNCR Image(s) : Pat O'Neill, Young Adult Ministry
- GNCR Image(s) : Fr. David O'Neill
- GNCR Image(s) : Fr. Thomas Edwards O'Neill
- GNCR Image(s) : Mary Beth Onk
- GNCR Image(s) : Blaise J. Opulente, St. John's university official
- GNCR Image(s) : Sister Mary George O'Reilley
- GNCR Image(s) : Mary Alice O'Reilly
- GNCR Image(s) : Yuri Orlov
- GNCR Image(s) : Msgr. J. Stanley Ormsby, of Niagara Falls
- GNCR Image(s) : Fr. Paul O'Rourke, Navy Chaplain
- GNCR Image(s) : Father James O'Rourke
- GNCR Image(s) : Father Hugh O'Rourke
- GNCR Image(s) : Father Joseph O'Rourke
- GNCR Image(s) : Fr. Kevin O'Rourke
- GNCR Image(s) : Very Reverend Matthew J. O'Rourke
- GNCR Image(s) : Ray Orrock
- GNCR Image(s) : Calvin Orsborn, Alabama Famers' coop
- GNCR Image(s) : Jesus Ortega
- GNCR Image(s) : Pablo Ortega
- GNCR Image(s) : Richard Chavez Ortiz
- GNCR Image(s) : Bishop Stephen Soter Ortynsky, First Byzantine rite bishop in U.S.
- GNCR Image(s) : Canon Charles H. Osborn
- GNCR Image(s) : John Osborne
- GNCR Image(s) : Brother Ronald Osborne
- GNCR Image(s) : Father James D. O'Shaughnessy
- GNCR Image(s) : John A. O'Shea, Bishop of Kanchow China
- GNCR Image(s) : Dan O'Shea, Deacon (Rochester, N.Y.)
- GNCR Image(s) : Dr. Karlis Osis
- GNCR Image(s) : Fr. Josef Oslr, Pontifical Russian College
- GNCR Image(s) : Donny and Marie Osmond
- GNCR Image(s) : Father E. Donald Osuna
- GNCR Image(s) : Eric Oswald
- GNCR Image(s) : Cardinal Alfredo Ottaviani (Deceased August 8, 1979)
- GNCR Image(s) : Rev. Pio Ottegno
- GNCR Image(s) : Cardinal Maurice Otunga
- GNCR Image(s) : Gilles Ouellet, Archbishop
- GNCR Image(s) : Major Norris M. Overly
- GNCR Image(s) : Dwight Hall Jr. Owen, Viet Volunteer
- GNCR Image(s) : Steve Owens
- GNCR Image(s) : Sen. Robert L. Packwood
- GNCR Image(s) : Fr. Anthony Padovano
- GNCR Image(s) : Msgr. Juliusz Paetz
- GNCR Image(s) : Francisco Pagakhan, Bishop