101 Squadron "Roncos" (Esquadra 101) is a flight training squadron of the Portuguese Air Force (PoAF), based at Sintra Air Base (BA1), with the mission of providing elementary and basic flight training.

Created in April 1978 as result of a reorganization of the PoAF, the squadron took command of all material and human resources of the then-disbanded 21 Squadron (former Portuguese: Esquadra de Instrução Elementar de Pilotagem, E.I.E.P.

As such, the squadron also inherited all flight training traditions and history of the Portuguese military aviation that was developed since 1916.

It's that same year, in 1989, that the squadron receives the additional mission of providing basic flight instruction, thus effectively replacing the former E.I.B.P.

As part of an agreement between the PoAF and Portuguese Navy, pilots of the Naval Aviation also undergo flight training with 101 Squadron.