| Slovak Cup | |
| Year: | 2003–04 |
| Country: |  Slovakia |
| Num Teams: | 30 |
| Champions: | Artmedia Petržalka |
| Runner-Up: | Steel Trans Ličartovce |
| Prevseason: | 2002–03 |
| Nextseason: | 2004–05 |
The 2003–04 Slovak Cup was the 35th season of Slovakia's annual knock-out cup competition[1] and the eleventh since the independence of Slovakia. It began on 26 August 2003 with the matches of first round and ended on 8 May 2004 with the final. The winners of the competition earned a place in the second qualifying round of the UEFA Cup. Matador Púchov were the defending champions.
The match Steel Trans Ličartovce – MFK Ružomberok was played on 26 August 2003 and the thirteen games were played on 2 and 3 September 2003.|}
The four games were played on 30 September 2003 and the four games were played on 1 October 2003.|}
The first legs were played on 21 and 22 October 2003. The second legs were played on 28 and 29 October 2003.
The first legs were played on 7 April 2004. The second legs were played on 21 April 2004.
See main article: 2004 Slovak Cup final.