Time Line 1903
- canonization of Saint Seraphim of Sarov
- cultus confirmed for Blessed John of Vercelli
- cultus confirmed for Blessed John Righi of Fabriano
- cultus confirmed for Saint Amadeus of Lausanne
- cultus confirmed for Saint Colman of Cloyne
- cultus confirmed for Saint Comgall of Bangor
- cultus confirmed for Saint Colman of Kilmacduagh
- cultus confirmed for Saint Finnian of Moville
- cultus confirmed for Saint Nathy
- cultus confirmed for Saint Kevin of Glendalough
- diocese of Baker City, Oregon, USA established
- death of Blessed Edoardo Giuseppe Rosaz
- death of Blessed Clemente Marchisio
- death of Blessed Jean Marie Cassant
- death of Pope Leo XIII
- death of Saint Gemma Galgani
- death of Saint Gertrude Caterina Comensoli
- ascension of Pope Saint Pius X
- birth of Blessed Adalbert Nierychlewski
- birth of Blessed Adam Bargielski
- birth of Blessed Basil Velychkovsky
- birth of Blessed Cyprian Michael Iwene Tansi
- birth of Blessed Olympia Bida
- birth of Saint Julián Alfredo
- promulgation of E Supremi: On the Restoration of All Things in Christ by Pope Saint Pius X
| 1902 | 1904 |
