1st Division (United Kingdom) (disambiguation)

1st Division (United Kingdom) may refer to:


 * 1st (United Kingdom) Division, is the current official name for the British Army 1st Division. known as the Mobile Division when formed in 1937, it was later known as the 1st Armoured Division, it fought during World War II and disbanded afterwards. It was reconstituted in the 1960s as the 1st Division.
 * 1st Infantry Division (United Kingdom), a British Army division with a long history having been present at the Peninsular War, the Crimean War, the First World War, and during the Second World War.
 * 1st Cavalry Division (United Kingdom), a regular Division of the British Army during the First World War. During the Second World War it fought in the Middle East before being converted to the 10th Armoured Division.