The Czech Republic national under-21 football team is the national under-21 association football team of the Czech Republic and is controlled by the Football Association of the Czech Republic. The team competes in the UEFA European Under-21 Championship, held every two years.

The UEFA European Under-21 Championship, the UEFA Under-21 Championship or simply the Euro Under-21, is a biennial football competition contested by the European men's under-21 national teams of the UEFA member associations. Since 1992, the competition also serves as the UEFA qualification tournament for the Summer Olympics.