Goodridge v. Dept. of Public Health, 798 N.E.2d 941 (Mass. 2003), is a landmark Massachusetts Supreme Judicial Court case in which the Court held that the Massachusetts Constitution requires the state to legally recognize same-sex marriage. The November 18, 2003, decision was the first by a U.S. state's highest court to find that same-sex couples had the right to marry. Despite numerous attempts to delay the ruling, and to reverse it, the first marriage licenses were issued to same-sex couples on May 17, 2004, and the ruling has been in full effect since that date.

The Massachusetts Supreme Judicial Court (SJC) is the highest court in the Commonwealth of Massachusetts. Although the claim is disputed by the Supreme Court of Pennsylvania, the SJC claims the distinction of being the oldest continuously functioning appellate court in the Americas, with a recognized history dating to the establishment of the Massachusetts Superior Court of Judicature in 1692 under the charter of the Province of Massachusetts Bay.Although it was historically composed of four associate justices and one chief justice, the court is currently composed of six associate justices and one chief justice.