The 1945–46 Copa Federación de España was the second staging (old competition) of the Copa Federación de España, a knockout competition for Spanish football clubs.
The competition began on 10 February 1946 and ended with the final on 20 June 1946, where Alavés became champion after defeating Sueca.
Competition
First round
Group 1
Group 1-A
Group 1-B
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 8
Group 9
Group 10
Group 11
Group 12
Group 13
Group 14
Second round
Third round
Fourth round
Semi-finals
Final