The King's Own Royal Border Regiment is an infantry regiment of the British Army. It was formed in 1959 through the amalgamation of two other regiments:

• The King's Own Royal Regiment (Lancaster)
• The Border Regiment

In 2004, as part of the restructuring of the infantry, it was announced that the King's Own Royal Border Regiment would amalgamate with the King's Regiment and the Queen's Lancashire Regiment to form the new King's Lancashire and Border Regiment.