The 1998–99 Slovak Cup was the 30th season of Slovakia's annual knock-out cup competition[1] and the sixth since the independence of Slovakia.
It began on 29 July 1998 with the matches of preliminary round and ended on 8 May 1999 with the final.
The winners of the competition earned a place in the first round of the UEFA Cup.
The games were played on 8 September 1998, except for the match ŠKP Devín – Artmedia Petržalka, which was played on 9 September 1998.
The games were played on 22 September 1998, except for the match Spartak Trnava – Baník Prievidza, which was played on 23 September 1998.