|Tournament format(s) League system|
|Champions Middlesex (1st title)|
|Cricket format First-class cricket
Most runs C. B. Fry (2,413 for Sussex)
Most wickets Wilfred Rhodes (143 for Yorkshire)
The 1903 County Championship was the fourteenth officially organised running of the County Championship, and ran from 4 May to 3 September 1903. Middlesex won their first championship title, ending Yorkshire's run of three successive titles. Sussex finished in second place for the second successive season.