Mark Day may refer to:
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Mark Day (racing driver)
Mark Day (born September 21, 1961) is an American former professional stock car racing driver, racing for a number of years in NASCAR's Busch and Southeast Series, as well as the ARCA Re/Max Series. In addition, his family used to own Day Enter ...
(born 1961), American racecar driver
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Mark Day (actor) (born 1978), Canadian actor
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Mark Day (film editor) (born 1958), British film editor
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Mark Day (singer), ''Canadian Idol'' season 6 contestant
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Mark Day (musician), member of the
Happy Mondays
{{human name disambiguation, Day, Mark