109th (Aberdeenshire) Regiment of Foot

The 109th (Aberdeenshire) Regiment of Foot was an infantry regiment of the British Army from 1794 to 1795.

The 109th was one of fifty-eight regiments of foot raised in 1793-95 as part of a recruiting drive. The majority of these units had a short and uneventful existence as it was decided in 1795 to "reduce" all regiments numbered above 100, and to draft their members into existing senior regiments.

The regiment was raised on 17 May 1794 by Alexander Hay in Aberdeenshire, and was initially known as "Hay's" or the Aberdeenshire Regiment. On 1 October 1794 the regiment was numbered as the 109th Foot and Hay appointed colonel by royal warrant. In the following year the regiment moved to Jersey before being disbanded in Southampton. The men were drafted into the existing 53rd (Shropshire) Regiment of Foot.