William McKeag MSM (29 June 1897 – 4 October 1972) was a British politician, soldier and solicitor. His political affiliations changed over the years from Liberal to National Liberal, back to Liberal and finally to Conservative, but he never wavered from a fierce loyalty to his native North East of England and was described in his obituary in The Times as one of the North East's leading figures, a keen publicist for the area and for Tyneside in particular.