The Massachusetts General Court, formally the General Court of Massachusetts, is the state legislature of the Commonwealth of Massachusetts located in the state capital of Boston. The name "General Court" is a holdover from the earliest days of the Massachusetts Bay Colony, when the colonial assembly, in addition to making laws, sat as a judicial court of appeals. Before the adoption of the state constitution in 1780, it was called the Great and General Court, but the official title was shortened by John Adams, author of the state constitution. It is a bicameral body. The upper house is the Massachusetts Senate which is composed of 40 members. The lower body, the Massachusetts House of Representatives, has 160 members; until 1978, the state house had 240 members. It meets in the Massachusetts State House on Beacon Hill in Boston.

Massachusetts, officially the Commonwealth of Massachusetts, is a state in the New England region of the Northeastern United States. It borders the Atlantic Ocean and Gulf of Maine to its east, Connecticut and Rhode Island to its south, New Hampshire and Vermont to its north, and New York to its west. Massachusetts is the sixth-smallest state by land area. With over seven million residents as of 2020, it is the most populous state in New England, the 16th-most-populous in the country, and the third-most densely populated, after New Jersey and Rhode Island.