2003–04 Rushden & Diamonds F.C. season

During the 2003–04 English football season, Rushden & Diamonds competed in the Second Division.

Season summary
Despite chairman and owner Max Griggs declaring his intention to sell the club in October, by Christmastime Rushden & Diamonds were two points off the play-off spaces. However, their next 11 games saw a return of only 8 points, leaving the club in relegation peril. This came amidst the background of increasing financial woes, which culminated in four key players leaving on March's transfer deadline day, most notably top scorer Onandi Lowe. Manager Brian Talbot had already departed to take over at Oldham Athletic, leaving Barry Hunter to take over as player-manager. Ernie Tippett took over as permanent manager with 3 games left of the season, but lost all 3, condemning the club to an immediate return to the fourth tier.

Kit
Rushden & Diamonds switched kit manufacturers to Errea. Dr. Martens remained kit sponsor.

First-team squad

 * Squad at end of season