Mark Harrington may refer to:
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Mark Harrington (HIV/AIDS activist)
Mark Harrington (Born in , in San Francisco) is an HIV/AIDS researcher, a staunch activist for HIV/AIDS and tuberculosis awareness, and the co-founder and policy director of the Treatment Action Group (TAG). (born 1959 or 1960), American AIDS activist
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Mark Harrington (anti-abortion activist)
Mark Harrington is an American anti-abortion activist. From 1999–2011, he was the executive director of the Midwest office of the Center for Bio-Ethical Reform and president of the Pro-Life Institute. In 2011, Harrington became the founder an ...
, American anti-abortion activist
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Mark Raymond Harrington (1882–1971), American archeologist
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Mark Harrington (painter) (born 1952), American-born Europe-based painter
{{human name disambiguation, Harrington, Mark