FCI Levadia U21 Tallinn, commonly known as FCI Levadia U21, is an Estonian football club based in Tallinn.

They must play at least one level below their main side, however, so Levadia U21 is ineligible for promotion to the Meistriliiga but can play in the Estonian Cup.

As Levadia Tallinn, the club has won 1 Estonian Cup trophy.

In 2017, Tallinna FC Levadia and FCI Tallinn joined, which resulted in their reserves also joining and becoming Tallinna FCI Levadia U21 After winning the Estonian Cup they played in the 2002–03 UEFA Cup.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.