This is a list of mayors of the city of Markham, Ontario as well as reeves of Markham Village and Township of Markham

York County Era (1850-1971)

Following the passage of the Baldwin Act in 1849 (now Municipal Incorporation Act) the Home District was abolished and local governments were created. The Village of Markham (a police village called Markham Village) was formed in 1850 (with York County, Ontario) and a local council led by a reeve. From 1850 to 1873 the reeve was appointed position. On November 20, 1872, the Warden of York County signed the By-law of Incorporation, which resulted in the election of the reeve (and Council) for the Village of Markham. After 1968, Markham Village became the Township of Markham with council now led by a mayor:

Reeves of Markham Village 1872-1968

Mayors of Markham Village 1969-1970

York Region Era (1971-)

Post war changes and the rapid urban growth of Toronto led to the shrinking of York County and gave rise to the establishment of the Regional Municipality of York (Regional Municipality of York Act RSO). Following the creation of York Region in 1971, the Town of Markham was incorporated by the larger Township of Markham Village, annexing the smaller villages of Unionville, Ontario and Thornhill, Ontario (portion east of Yonge Street) into the new local government. A new Town Council was created (replacing the councils of Markham Village, Unionville and Thornhill) and led by the following mayors:

Deputy Mayors and Reeves

Notable reeves and mayors

Several reeves and mayors of Markham went on to serve in higher elected office after (and before) their terms in Markham: