The Scots Guards (SG) is a regiment of the Guards Division of the British Army, whose origins lie in the personal bodyguard of King Charles I of England and Scotland. Its lineage can be traced as far back as 1642, although it was only placed on the English Establishment (thus becoming part of what is now the British Army) in 1686.

The Scots Guards is ranked as the third regiment in the Guards Division; as such, Scots Guardsmen can be recognised by having the buttons on their tunics spaced in threes. The regiment consists of a single operational battalion, which has been based in Catterick since 2008, in the armoured infantry role. However, since 1993, the regiment has also maintained an independent company, F Company, permanently based in Wellington Barracks, London on public duties. It is the custodian of the colours and traditions of the 2nd Battalion, which was placed in permanent suspended animation in 1993 as a result of Options for Change.

Under the reforms announced in 2004, the Scots Guards will remain as a single battalion regiment, but be given a fixed role. It will remain as an armoured infantry battalion, moving from Münster to Catterick, in northern England in 2009. In 2011, the 1st Battalion undertook public duties for the first time in many years, in conjunction with it having its Queen's Colour trooped during the Queen's Birthday Parade. For this, elements of the battalion moved from Catterick to Pirbright for a time.