| Task Force 20 (TF-20) | |
|---|---|
 CTF-20 insignia | |
| Active | 1946–2012 |
| Allegiance |  United States |
| Branch |  United States Navy |
| Type | Task Force |
| Role | Battle Force |
| Part of | United States Second Fleet |
| Garrison/HQ | Naval Station Norfolk, Virginia |
Task Force 20 is a temporary combat force designation that has been used several times and may still be used by separate parts of the United States armed forces. The longer-established iteration was a part of the United States Second Fleet in the Atlantic from after the Second World War. This was part of the formal United States Military Communications-Electronic Board system.
The other iteration was a much more temporary task force of the Joint Special Operations Command, one of the designations used by the JSOC high value targets task force which began its life as Task Force 11 (also doubling a U.S. Navy designation) after the September 11 terrorist attacks.