De Klassieker
| Other names | Ajax vs Feyenoord | 
|---|---|
| Location | Netherlands | 
| Teams | Ajax Feyenoord | 
| First meeting | 9 October 1921 1ste Klasse Feyenoord 2–2 Ajax | 
| Latest meeting | 2 February 2025 Eredivisie Ajax 2–1 Feyenoord | 
| Statistics | |
| Meetings total | 207 | 
| Most wins | Ajax (95) | 
| Top scorer | Sjaak Swart (18) | 
| Largest victory | Ajax 8–2 Feyenoord (18 September 1983) Feyenoord 6–0 Ajax (7 April 2024) | 
De Klassieker (The Classic) is the main football rivalry of the Netherlands, between Ajax (of Amsterdam) and Feyenoord (of Rotterdam). The record attendance was on 9 January 1966, when 65,562 watched in Rotterdam.