The 1983-84 KNVB Cup was the 66th edition of the Dutch national football annual knockout tournament for the KNVB Cup. 46 teams contested, beginning on 8 October 1983 and ending at the final on 2 May 1984. Feyenoord beat Fortuna Sittard 1–0 and won the cup for the sixth time. Replays were held if teams were tied after ninety minutes.

Teams

First round

The matches of the first round were played on 8-9 October 1983. E Eredivisie; 1 Eerste Divisie; A Amateur teams

Replays

Second round

The matches of the second round were played on November 12 and 13, 1983.

Replays

Round of 16

The matches of the round of 16 were played during January, 1984.

Replays

Quarter finals

The quarter finals were played between February 29 and March 4, 1984.

Replay

Semi-finals

The semi-finals were played on March 28, 1984.

Replay

Final

Feyenoord also won the Dutch Eredivisie championship, thereby taking the double. They would participate in the European Cup, so finalists Fortuna Sittard could play in the Cup Winners' Cup.