The Suffolk Regiment was an infantry regiment of the line in the British Army with a history dating back to 1685. It saw service for three centuries, participating in many wars and conflicts, including the First and Second World Wars, before being amalgamated with the Royal Norfolk Regiment to form the 1st East Anglian Regiment in 1959 which, in 1964, was further amalgamated with the 2nd East Anglian Regiment, the 3rd East Anglian Regiment and the Royal Leicestershire Regiment to create the present Royal Anglian Regiment.

The Royal Norfolk Regiment was a line infantry regiment of the British Army until 1959. Its predecessor regiment was raised in 1685 as Henry Cornwall's Regiment of Foot. In 1751, it was numbered like most other British Army regiments and named the 9th Regiment of Foot.