January 1, 1903
1903 treaty between Cuba and the United States
Ilinden–Preobrazhenie Uprising — Revolt against the Ottoman Empire in Southeastern Europe 1903
1903 Tour de France — cycling race
1903 Italian Football Championship — sports season
1903 — common year starting on Thursday
1903 treaty between the United States and Colombia
25 Feb 1903 shootout in Stanaford, West Virginia, USA
1903 Isfahan anti-Baháʼí riots
Armed incident between Peru and Ecuador
1903 riot in Evansville, Indiana