1965–66 Yugoslav Cup
The 1965–66 Yugoslav Cup was the 19th season of the top football knockout competition in SFR Yugoslavia, the Yugoslav Cup, also known as the "Marshal Tito's Cup", since its establishment in 1946.
First round proper
In the following tables winning teams are marked in bold; teams from outside top level are indicated with Roman numerals, corresponding to league level.| Tie no | Home team | Score | Away team |
| 1 | Aluminij Kidričevo | 0–4 | Slavonija Osijek |
| 2 | Bačka (BP) | 2–3 | Vardar |
| 3 | Hajduk Split | 0–0 | Dinamo Zagreb |
| 4 | Rijeka | 3–1 | Partizan |
| 5 | Sloboda Tuzla | 5–0 | Mladost (SP) |
| 6 | Sutjeska Nikšić | 3–3 | OFK Beograd |
| 7 | Trepça | 3–1 | Red Star |
| 8 | Željezničar | 0–1 | Srem |