Antonin Gregory Scalia was an American jurist who served as an associate justice of the Supreme Court of the United States from 1986 until his death in 2016. He was described as the intellectual anchor for the originalist and textualist position in the U.S. Supreme Court's conservative wing. For catalyzing an originalist and textualist movement in American law, he has been described as one of the most influential jurists of the twentieth century, and one of the most important justices in the history of the Supreme Court. Scalia was posthumously awarded the Presidential Medal of Freedom in 2018, and the Antonin Scalia Law School at George Mason University was named in his honor.

Originalism is a method of constitutional and statutory interpretation. Most Originalists assert that legal text should be interpreted based on the original understanding at the time of adoption, while some also incorporate original intent. Originalists object to the idea of Judicial activism and other significant legal evolution being driven by judges misusing the common law framework. Instead, Originalists argue for democratic modifications of laws through the Legislature or through Constitutional amendment.