Stobart Air, legally incorporated as Stobart Air Unlimited Company is an Irish regional airline headquartered in Dublin. It operates scheduled services under the brands Aer Lingus Regional, BA CityFlyer and KLM Cityhopper on behalf of their respective owners. Stobart Air has operating bases at Cork, Dublin and the Isle of Man for Aer Lingus Regional. The airline employs over 570 people.

Established as Aer Arann 1970, a major refinancing in 2014 was associated with a name change to Stobart Air. Aer Arann (styled as Aer Arann Regional) was a regional airline based in Dublin, Ireland. The airline operated scheduled services on behalf of Aer Lingus Regional. The airline had three bases in Cork, Dublin and Shannon which operated under the Aer Lingus Regional brand.

On 19 March 2014, Aer Arann announced that it would be changing its corporate name to Stobart Air by the end of 2014.