Irish Army Reserve

The Army Reserve (AR) (Irish: Cúltaca an Airm) is the land component of Ireland's Reserve Defence Forces (RDF). It is the second line reserve of the Irish Army. The Army Reserve is a part-time voluntary organization, and is one of two elements of the Reserve Defence Forces, the other element being the Naval Service Reserve.

It was established on October 1st, 2005 to replace and reorganize the previous reserve organization, and to improve training and courses similar to those of the professional Permanent Defence Forces (PDF). This reorganization saw the creation of an overriding Reserve Defence Forces structure which spans both the Army and Naval Service Reserve.

Prior to the 2005 restructure, the land component of the reserve forces were known as the Fórsa Cosanta Áitiúil (FCÁ) (local defence force), which in turn has its origins in the units formed in 1920s.