1st Division (United Kingdom) (disambiguation)

1st Division (United Kingdom) may refer to:

• 1st (United Kingdom) Division, current active division of the British Army.
• 1st Division or 1st Infantry Division, formed in 1809. It fought in the Napoleonic Wars, the Crimean War, the Second Boer War, and the First and Second World Wars. It was disbanded in 1960 in England, and reformed the same year in Germany. That formation was renamed the 1st Armoured Division during the 1970s, went on to fight in the Gulf War, and has since been renamed the 1st (United Kingdom) Division.
• 1st Armoured Division: initially formed in 1937 as the Mobile Division. It was renamed the 1st Armoured Division in 1939. It fought during the Second World War, and was disbanded in 1945. It was briefly reconsituted in 1946, when the 6th Armoured Division was renamed. That formation was disbanded in 1947.
• 1st Cavalry Division (United Kingdom), previously known as the Cavalry Division and fought during the Napoleonic Wars, the Crimean War, the Second Boer War. A new formation, with the number 1, was formed and fought in the First World War. During the Second World War, it was deployed to the Middle East and broken-up, before elements were converted to the 10th Armoured Division.