| 1988–89 | |
| Country: | Netherlands |
| Num Teams: | 64 |
| Defending Champions: | PSV |
| Winners: | PSV |
| Second: | FC Groningen |
| Scoring Leader: | Willem van der Ark (6) |
| Prev Season: | 1987–88 |
The 1988-89 KNVB Cup was the 71st edition of the Dutch national football annual knockout tournament for the KNVB Cup. 64 teams contested, beginning on 1 October 1988 and ending at the final on 25 May 1989.
PSV beat FC Groningen 4–1 and won the cup for the fifth time.
The matches of the first round were played on 1-2 October 1988.
| Home team | Result | Away team | |
|---|---|---|---|
| NSVV A | 1–4 | FC Twente E | |
| VV OVV A | 0–4 | BVV Den Bosch E | |
| Quick Boys A | 1–2 | Fortuna Sittard E | |
| RCH A | 0–5 | Feyenoord E | |
| VV Rheden A | 1–2 | PSV E | |
| Rijnsburgse Boys A | 3–2 | SC Cambuur 1 | |
| ROHDA Raalte A | 1–1 (p) | FC Den Haag 1 | |
| RVVH A | 0–7 | MVV E | |
| SC Enschede A | 0–2 | RBC 1 | |
| SC Heracles 1 | 2–3 | FC Utrecht E | |
| SV Spakenburg A | 3–2 | DS '79 1 | |
| SVV 1 | 0–6 | Ajax E | |
| TOP Oss A | 2–3 (aet) | Veendam E | |
| SV Venray A | 1–2 | PEC Zwolle E | |
| VC Vlissingen A | 2–1 | De Graafschap 1 | |
| VVOG A | 3–1 | Excelsior 1 |
| Home team | Result | Away team | |
|---|---|---|---|
| ACV A | 1–3 (aet) | sc Heerenveen 1 | |
| VV Bennekom A | 1–2 | FC Groningen E | |
| Blauw-Wit A | 1–0 | Go Ahead Eagles 1 | |
| VV de Bataven A | 0–3 | FC Wageningen 1 | |
| De Treffers A | 0–4 | HFC Haarlem E | |
| DHC Delft A | 1–4 | Vitesse Arnhem 1 | |
| DOS Kampen A | 0–4 | AZ 1 | |
| VV DOVO A | 3–5 | VVV E | |
| USV Elinkwijk A | 0–1 | FC Eindhoven 1 | |
| FC Emmen 1 | 2–7 | Willem II E | |
| Enter Vooruit A | 0–3 | FC Volendam E | |
| VV Geldrop/AEK A | 2–5 | Roda JC E | |
| Helmond Sport 1 | 2–0 | NEC 1 | |
| IJsselmeervogels A | 0–2 | RKC Waalwijk E | |
| TSV Longa A | 1–4 | Sparta E | |
| NAC Breda 1 | 0–0 (p) | Telstar 1 |
E Eredivisie; 1 Eerste Divisie; A Amateur teams
The matches of the second round were played on November 18, 19 and 20, 1988.
| Home team | Result | Away team | |
|---|---|---|---|
| PSV | 2–1 | FC Volendam | |
| Rijnsburgse Boys | 2–4 | Willem II | |
| RKC Waalwijk | 1–6 | Feyenoord | |
| SV Spakenburg | 1–4 | AZ | |
| VC Vlissingen | 2–0 | BVV Den Bosch | |
| VVOG | 3–1 (aet) | Helmond Sport | |
| VVV | 3–4 (aet) | FC Groningen | |
| FC Wageningen | 1–5 | Vitesse Arnhem |
| Home team | Result | Away team | |
|---|---|---|---|
| Ajax | 4–1 | PEC Zwolle | |
| Blauw-Wit | 1–3 | Sparta | |
| FC Eindhoven | 2–3 (aet) | Telstar | |
| FC Den Haag | 1–0 | Roda JC | |
| FC Twente | 1–0 | Veendam | |
| FC Utrecht | 5–0 | RBC | |
| Fortuna Sittard | (p) 1-1 | HFC Haarlem | |
| MVV | 1–3 | sc Heerenveen |
The matches of the round of 16 were played between February 1 and 15, 1989.
| Home team | Result | Away team | |
|---|---|---|---|
| Ajax | 2–1 | FC Utrecht | |
| AZ | 2–1 | Fortuna Sittard | |
| FC Den Haag | 3–2 | Sparta | |
| Feyenoord | 0–2 | Willem II | |
| PSV | 2–0 | FC Twente | |
| Telstar | 0–2 (aet) | VC Vlissingen | |
| Vitesse Arnhem | 1–0 | sc Heerenveen | |
| VVOG | 0–1 | FC Groningen |
The quarter finals were played between March 8 and March 15, 1989.
| Home team | Result | Away team | |
|---|---|---|---|
| VC Vlissingen | 0–3 | FC Den Haag (on Feb. 19) | |
| AZ | 0–2 | PSV | |
| FC Groningen | 3–0 | Ajax | |
| Willem II | (p) 1-1 | Vitesse Arnhem |
The semi-finals were played on April 12, 1989.
| Home team | Result | Away team | |
|---|---|---|---|
| FC Groningen | 5–1 | Willem II | |
| PSV | 5–2 | FC Den Haag |
PSV also won the Dutch Eredivisie championship, thereby taking the double. They would participate in the European Cup, so finalists FC Groningen could play in the Cup Winners' Cup.