The 2003 Chatham Cup was the 76th annual nationwide knockout football competition in New Zealand.
Up to the last 16 of the competition, the cup was run in three regions (northern, central, and southern), with an open draw from the quarter-finals on.
In the final University-Mount Wellington subdued Melville United, running out 3-1 winners.
The Jack Batty Memorial Cup is awarded to the player adjudged to have made to most positive impact in the Chatham Cup final.
The winner of the 2003 Jack Batty Memorial Cup was Kara Waetford of University-Mount Wellington.