| 2002–03 Serbia and Montenegro Cup | |
| Num Teams: | 32 |
| Champions: | Sartid |
| Runner-Up: | Red Star |
| Matches: | 31 |
| Goals: | 83 |
| Prevseason: | 2001–02 |
| Nextseason: | 2003–04 |
The 2002–03 Serbia and Montenegro Cup (in fall season FR Yugoslavia Cup) was the eleventh and last under the name FR Yugoslavia and (after was the country renamed in February 2003) first season of the Serbia and Montenegro's annual football cup. The cup defenders (last winners of the FR Yugoslavia Cup) was Red Star Belgrade, but was defeated by FK Sartid in the final.
Thirty-two teams entered in the First Round. The matches were played on 10, 11 and 18 September 2002.
|}1The match was played in Raška.
Note: Roman numerals in brackets denote the league tier the clubs participated in the 2002–03 season.
The 16 winners from the prior round enter this round. The matches were played on 24 and 25 September 2002.
|}Note: Roman numerals in brackets denote the league tier the clubs participated in the 2002–03 season.
The eight winners from the prior round enter this round. The matches were played on 27 November 2002.
|}Note: Roman numerals in brackets denote the league tier the clubs participated in the 2002–03 season.
The four winners from the prior round enter this round. The matches were played on 9 April 2003.
|}Note: Roman numerals in brackets denote the league tier the clubs participated in the 2002–03 season.