The sixth Inter-Cities Fairs Cup was played over the 1963–64 season. The competition was won by Zaragoza in a one-off final at Camp Nou in Barcelona against fellow Spaniards and defending champions Valencia. There was only one representative city team, from Copenhagen, with established sides filling all the other slots.
First round
1 Lausanne-Sport won 3–2 after extra time in a play-off to advance to the second round. 2 Juventus won 1–0 in a play-off to advance to the second round. First leg ---- ---- ---- ---- ---- ---- Second leg RFC Liège won 2–0 on aggregate. ---- Valencia won 3–2 on aggregate. ---- {{football box OFK Beograd 3–3 Juventus on aggregate. {{football box Juventus won 1–0 in play-off. ---- Atlético Madrid won 2–1 on aggregate. ---- Lokomotiv Plovdiv won 5–2 on aggregate. ---- {{football box Roma won 5–1 on aggregate. ---- Belenenses won 4–1 on aggregate. == Second round ==
Second round
First leg {{football box ---- {{football box Second leg {{football box Juventus won 3–1 on aggregate. ---- {{football box Roma won 3–1 on aggregate. == Quarter-finals ==
Quarter-finals
3 RFC Liegeois won 1–0 in a play-off in Liège to advance to the semi-finals. First leg {{football box ---- {{football box Second leg {{football box Zaragoza won 3–2 on aggregate. ---- {{football box Köln won 5–3 on aggregate. == Semi-finals ==
Semi-finals
4 Zaragoza won 2–0 in a play-off in Zaragoza to advance to the final. == Final ==