1978 UEFA European Under-21 Championship

The 1978 UEFA European Under-21 Championship, which spanned two years (1976–78) had 24 entrants. Yugoslavia U-21s won the competition.

The 24 national teams were divided into eight groups. The group winners played off against each other on a two-legged home-and-away basis until the winner was decided. There was no finals tournament or 3rd-place playoff.