The Huntingdonshire Cyclist Battalion was a bicycle infantry battalion of the British Army. Formed in the Territorial Force in February 1914, it remained in the United Kingdom throughout the First World War. After the war, in 1920, it was converted to infantry and became the 5th (Huntingdonshire) Battalion, Northamptonshire Regiment, in the Territorial Army. The battalion saw extensive service in the Second World War, fighting in France in 1940, Tunisia from 1942–43 and later Sicily and Italy from 1943–45 before ending the war in May 1945 in Austria. It continued to serve after the Second World War until May 1961 when it was amalgamated with the 4th Battalion, Northamptonshire Regiment, to form the 4th/5th Battalion, Northamptonshire Regiment.

The Northamptonshire Regiment was a line infantry regiment of the British Army in existence from 1881 until 1960. In 1960, it was amalgamated with the Royal Lincolnshire Regiment to form the 2nd East Anglian Regiment, which was amalgamated with the 1st East Anglian Regiment, the 3rd East Anglian Regiment and the Royal Leicestershire Regiment to form the present Royal Anglian Regiment.