The 3rd Special Forces Group (Airborne) – abbreviated 3rd SFG(A) and often simply called 3rd Group – is an active duty United States Army Special Forces (SF) group which was active in the Vietnam Era (1963–69), deactivated, and then reactivated in 1990. 3rd Group is designed to deploy and execute nine doctrinal missions: unconventional warfare, foreign internal defense, direct action, counter-insurgency, special reconnaissance, counter-terrorism, information operations, counterproliferation of weapon of mass destruction, and security force assistance. The 3rd SFG(A) was primarily responsible for operations within the AFRICOM area of responsibility, as part of the Special Operations Command, Africa (SOCAFRICA). Its primary area of operations (AO) is now Africa as part of a 2015 SOCOM directive but 3rd Group has also been involved in the Caribbean and the Greater Middle East. The 3rd SFG(A) has seen extensive action in the War on Terror and its members have distinguished themselves on the battlefield in Afghanistan.

The United States Army Special Forces (SF), colloquially known as the "Green Berets" due to their distinctive service headgear, is the special operations branch of the United States Army. Although technically an Army branch, the Special Forces operates similarly to a functional area (FA), in that individuals may not join its ranks until having served in another Army branch.