There have been two baronetcies created for persons with the surname Markham, one in the Baronetage of England and one in the Baronetage of the United Kingdom.
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The Markham Baronetcy, of Sedgebrooke in the County of Lincoln, was created in the Baronetage of England on 15 August 1642 for Robert Markham. The second Baronet represented Grantham and Newark in the House of Commons. The third Baronet sat as Member of Parliament for Grantham. The baronetcy became extinct on the death of the fourth Baronet in 1779.
The Markham Baronetcy, of Beachborough Park in Newington in the County of Kent, was created in the Baronetage of the United Kingdom on 10 July 1911 for Arthur Markham. He was the founder of the Doncaster Amalgamated Collieries and also represented Mansfield in the House of Commons as a Liberal. The third Baronet was a member of the Legislative Council of Kenya.