86th Regiment of Foot (disambiguation)

Three regiments of the British Army have been numbered the 86th Regiment of Foot:


 * 86th Regiment of Foot - formerly the 2nd battalion 76th Regiment of Foot raised in October 1758, for service in Africa, renumbered as the 86th Regiment in 1763 and disbanded in the same year.
 * 86th Regiment of Foot (Rutland Regiment), raised in England in July, 1779. It was sent to the Leeward Islands in January, 1780. Five companies stationed on Tobago were captured in June 1781. The regiment returned to England and was disbanded in 1783 at York.
 * 86th (Royal County Down) Regiment of Foot, raised in 1793 and amalgamated into The Royal Irish Rifles in 1881.