| King's Own Light Infantry (South Yorkshire Regiment) King's Own (Yorkshire Light Infantry) King’s Own Yorkshire Light Infantry (51st and 105th) | |
|---|---|
 The 'French' Horn and White Rose of the KOYLI | |
| Active | 1881–1968 |
| Country |  United Kingdom |
| Branch |  British Army |
| Type | Infantry |
| Role | Light infantry |
| Part of | Light Infantry Brigade (1948–68) |
| Garrison/HQ | Pontefract Barracks, Pontefract, West Yorkshire |
| Nickname(s) | 'The Koylis' |
| Patron | George IV (who conferred the 'Royal' title in 1821) |
| Motto(s) | Cede Nullis (Yield to none) |
| Colors | Dark Green, Royal Blue and Off-White |
| March | Quick: "Jockey to the Fair", Double: "The Keel Row", Slow: "Minden March" |
| Anniversaries | Minden Day (1 August) |
| Engagements | The Seven Years' War, The Peninsular War, Waterloo, The Boer War, World War I, World War II |
| Commanders | |
| Colonel-In-Chief | Queen Elizabeth The Queen Mother |
| Colonel of the Regiment | Maj-Gen. C J Deedes OBE MC (1966–68) |
| Notable commanders | Sir John Moore (1790–95) |
The King's Own Yorkshire Light Infantry (KOYLI) was a light infantry regiment of the British Army. It officially existed from 1881 to 1968, but its predecessors go back to 1755. In 1968, the regiment was amalgamated with the Somerset and Cornwall Light Infantry, the King's Shropshire Light Infantry and the Durham Light Infantry to form The Light Infantry, which in turn was merged with the Devonshire and Dorset Regiment, the Royal Gloucestershire, Berkshire and Wiltshire Regiment and the Royal Green Jackets to become The Rifles in 2007.