The Lord Warden of the Marches was an office in the governments of Scotland and England. The holders were responsible for the security of the border between the two nations, and often took part in military action. The Marches on both side of the border were traditionally split into West, Middle and East, each with their own warden answerable to the Lord Warden. The offices became unnecessary after the union of the crowns of England and Scotland under King James in 1603.

Notable Lords Warden of the Marches

For England

• Henry Carey, 1st Baron Hunsdon
• Robert Carey, 1st Earl of Monmouth (1596–1598)
• John Dudley, 1st Duke of Northumberland

For Scotland

• Archibald Douglas, 3rd Earl of Douglas
• Archibald Douglas, 4th Earl of Douglas
• Archibald Douglas, 6th Earl of Angus