| Cricket Format: | First-class cricket (3 days) |
| Tournament Format: | League system |
| Champions: | Middlesex |
| Count: | 1 |
| Participants: | 15 |
| Most Runs: | (2,413 for Sussex) |
| Most Wickets: | (143 for Yorkshire) |
| Previous Year: | 1902 |
| Previous Tournament: | 1902 County Championship |
| Next Year: | 1904 |
| Next Tournament: | 1904 County Championship |
The 1903 County Championship was the 14th 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.
| width=175 | Team | width=20 abbr="Played" | Pld | width=20 abbr="Won" | W | width=20 abbr="Lost" | L | width=20 abbr="Drawn" | D | width=20 abbr="Abandoned" | A | width=20 abbr="Points" | Pts | width=20 abbr="Finished matches" | Fin | width=50 abbr="Percentage of finished matches" | %Fin |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Middlesex | 18 | 8 | 1 | 7 | 2 | 7 | 9 | 77.77 | |||||||||
| Sussex | 24 | 7 | 2 | 14 | 1 | 5 | 9 | 55.55 | |||||||||
| Yorkshire | 26 | 13 | 5 | 8 | 0 | 8 | 18 | 44.44 | |||||||||
| Lancashire | 26 | 10 | 5 | 11 | 0 | 3 | 15 | 33.33 | |||||||||
| Nottinghamshire | 20 | 6 | 4 | 10 | 0 | 2 | 10 | 20.00 | |||||||||
| Worcestershire | 20 | 8 | 6 | 6 | 0 | 2 | 14 | 14.28 | |||||||||
| Warwickshire | 18 | 5 | 4 | 9 | 0 | 1 | 9 | 11.11 | |||||||||
| Essex | 22 | 7 | 6 | 7 | 2 | 1 | 13 | 7.69 | |||||||||
| Kent | 22 | 7 | 6 | 7 | 2 | 1 | 13 | 7.69 | |||||||||
| Somerset | 18 | 6 | 6 | 5 | 1 | 0 | 12 | 0.00 | |||||||||
| Surrey | 28 | 7 | 11 | 9 | 1 | –4 | 18 | –22.22 | |||||||||
| Derbyshire | 16 | 4 | 7 | 5 | 0 | –3 | 11 | –27.27 | |||||||||
| Gloucestershire | 20 | 3 | 10 | 7 | 0 | –7 | 13 | –53.84 | |||||||||
| Hampshire | 18 | 1 | 10 | 4 | 3 | –9 | 11 | –81.81 | |||||||||
| Leicestershire | 18 | 1 | 10 | 4 | 3 | –9 | 11 | –81.81 | |||||||||
| Source:[1] |
Bowling
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