| Bosnia and Herzegovina Football Cup | |
| Year: | 2002–03 |
| Country: | Bosnia and Herzegovina |
| Num Teams: | 32 |
| Defending Champions: | Sarajevo |
| Champions: | Željezničar 3rd national cup title |
| Runner-Up: | Leotar |
| Prevseason: | 2001–02 |
| Nextseason: | 2003–04 |
2002–03 Bosnia and Herzegovina Football Cup was the ninth season of the Bosnia and Herzegovina's annual football cups, and the third season of the unified competition. The competition started on 6 November 2002 with the First Round and concluded on 27 May 2003 with the Final.
Thirty-two teams entered in the First Round. The first legs were played on 6 November and the second legs were played on 10 November 2002.
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The 16 winners from the prior round enter this round. The first legs were played on 27 November and the second legs were played on 30 November 2002. |}
The eight winners from the prior round enter this round. The first legs were played on 15 February and the second legs were played on 5 March 2003.
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The four winners from the prior round enter this round. The first legs will be played on 19 March and the second legs were played on 9 April 2003.
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Željezničar won 2–0 on aggregate.