Sir Walter Ker of Cessford (died c. 1585) was a Scottish warden of the Middle March on the Anglo-Scottish border.
[1] The eldest son of Sir Andrew Ker of Cessford, by his wife Agnes, daughter of Robert, second lord Crichton of Sanquhar, he was served heir to his father 12 May 1528.
On the return of the young Queen Mary to Scotland, Cessfurd was reappointed to his old office of warden of the middle march.
[4] When the chiefs of the border clans were ordered in 1567 to enter Edinburgh Castle on the pretext that they might hinder the success of Bothwell's expedition into Liddesdale, Cessfurd was the only one except Ker of Ferniehirst who obeyed.
When Ker of Ferniehirst and others of the queen's party advanced to plunder Jedburgh in 1571, the inhabitants sent to Cessfurd for assistance, and by his aid and that of Lord Ruthven the attackers were routed.