The Argyll and Sutherland Highlanders (Princess Louise's) was a line infantry regiment of the British Army that existed from 1881 until amalgamation into the Royal Regiment of Scotland on 28 March 2006. 

The regiment was created under the Childers Reforms in 1881, as the Princess Louise's (Sutherland and Argyll Highlanders), by the amalgamation of the 91st (Argyllshire Highlanders) Regiment of Foot and 93rd (Sutherland Highlanders) Regiment of Foot, amended the following year to reverse the order of the "Argyll" and "Sutherland" sub-titles. The Argyll and Sutherland Highlanders was expanded to fifteen battalions during the First World War (1914–1918) and nine during the Second World War (1939–1945). The 8th Battalion was also a Territorial Army (TA) unit.