The 1972-73 KNVB Cup was the 55th edition of the Dutch national football annual knockout tournament for the KNVB Cup. 46 teams contested, beginning on 29 October 1972 and ending at the final on 31 May 1973. Ajax unsuccessfully defended its 1972 title losing on 10 December 1972 in the Second round, when the 18 Eredivisie teams entered this round, NAC, 2–2 (penalty shootout). NAC successfully pursued its first KNVB Cup defeating NEC, 2–0. NAC contested in the Cup Winners' Cup.

Teams

First round

1 Eerste Divisie; A Amateur teams

Second round

The 18 Eredivisie teams entered this round. E Eredivisie

Third round

From quarterfinals to final

Details of the final

NAC would participate in the Cup Winners' Cup.