Lindsey Olin Graham (born July 9, 1955) is an American politician from South Carolina. A member of the Republican Party, he is currently the senior United States Senator from that state. He serves on the Armed Services and Judiciary Committees.

Graham was born in Central, South Carolina, where his father, Florence James Graham, owned a liquor store. After graduating from high school, Graham became the first member of his family to attend college and joined the Reserve Officers' Training Corps. When he was 21 his mother died, and his father died 15 months later. Because he and his sister were now left orphaned, the service allowed Graham to attend University of South Carolina in Columbia so he could be near home and care for his sister, whom he adopted. During his studies, he became a member of the fraternity Pi Kappa Phi.

Graham graduated from the University of South Carolina with a B.A. in Psychology in 1977 and from the University of South Carolina School of Law with a J.D. in 1981. Upon graduating, Graham was sent to Europe as a military prosecutor, and eventually entered private practice as a lawyer.