3rd Massachusetts Regiment

{{About|a regiment in the American Revolution|the regiment in the American Civil War|3rd Regiment Massachusetts Volunteer Militia}}

{{Infobox Military Unit

|unit_name=Heath's Regiment
Greaton's Regiment
24th Continental Regiment
3rd Massachusetts Regiment

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|allegiance=Continental Congress of the United States

|type=Infantry

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|dates=1775-1783

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|command_structure=Massachusetts Line

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|battles=Bunker Hill, Saratoga

|notable_commanders=Colonel William Heath

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{{US Revolutionary units}}

The 3rd Massachusetts Regiment also known as the 24th Continental Regiment, Heath's Regiment, and Greaton's Regiment, was raised on April 23, 1775, under Colonel William Heath outside Boston, Massachusetts. When Heath was promoted to brigadier general in June 1775 the regiment came under the command of Colonel John Greaton. The regiment would see action at the Battle of Bunker Hill, Battle of Trois-Rivières, Battle of Valcour Island and the Battle of Saratoga. The regiment was disbanded, on November 3, 1783, at West Point, New York. Lineage carried on by the U.S. 104th Infantry Regiment.