The Czechoslovakia national under-21 football team was the national football team for the under-21s of Czechoslovakia, before the country split into the Czech Republic and Slovakia (For information about the national teams of the two countries, see the articles Czech Republic national under-21 football team and Slovakia national under-21 football team.) Following the realignment of UEFA's youth competitions in 1976, Czechoslovakia's Under-21 team was formed. Despite the end of the country in January 1993, the team played until March 1994, fulfilling its fixtures in the UEFA U-21 Championship as a combined team. Since the under-21 competition rules state that players must be 21 or under at the start of a two-year competition, technically it is an U-23 competition. Czechoslovakia's record for the preceding U-23 competitions is also shown. In its twelve U-23 and U-21 competitions, the team had a decent record, winning the first competition in 1972 and reaching the quarter-finals on seven occasions. The team failed to qualify for the final eight on four occasions.

UEFA U-23 Championship Record

Czechoslovakia were randomly chosen to play holders Bulgaria for the title, which they did not win. The competition was abandoned in summer 1970 for a larger competition, Czechoslovakia's next competitive match was in qualification for that competition, which ended in 1972 with them as champions.

UEFA U-21 Championship Record