Her Majesty's Coldstream Regiment of Foot Guards, also known officially as the Coldstream Guards (COLDM GDS), is a regiment of the British Army, part of the Guards Division or Household Division.

It is the oldest regiment in the Regular Army in continuous active service, originating in Coldstream, Scotland in 1650 when General George Monck founded the regiment. It is one of two regiments of the Household Division that can trace its lineage to the New Model Army, the other being the

Operationally, the Coldstream Guards currently perform the role of light infantry. The 1st Battalion is based in Aldershot as an operational light infantry battalion. Under the reforms announced in 2004, the Coldstream Guards will be given this as a fixed role, alternating the public duties task with the Irish Guards.