The 1903–04 Campeonato de Madrid served as a qualifier to determine who would represent the Community of Madrid in the 1903 Copa del Rey. Originally, Madrid was to be represented by the winner of a preliminary round between Club Español de Madrid and Madrid-Moderno (a merger of Madrid FC and Moderno FC). Then two more teams from Madrid, Moncloa FC and Iberia Football Club, were admitted in the competition, forcing a change to the schedule.
