The Bulgaria national under-21 football team (Bulgarian: Mладежки национален отбор на България по футбол) is considered to be the feeder team for the Bulgaria national football team. This team is for Bulgarian players aged under 21 at the start of the calendar year in which a two-year UEFA European Under-21 Championship campaign begins, so some players can remain with the squad until the age of 23.

Bulgaria U21 is the national youth soccer team of Bulgaria, consisting of players under the age of 21. The team competes in various international youth tournaments, such as the UEFA European Under-21 Championship, where they showcase the talent and potential of young Bulgarian footballers. Known for their skill, determination, and passion for the game, Bulgaria U21 is a team that is constantly striving to develop and improve, with the goal of producing future stars for the senior national team. With a rich history and tradition in youth soccer, Bulgaria U21 is a team to watch out for on the international stage.