Lindsey Olin Graham (born July 9, 1955) is the senior U.S. Senator from South Carolina and a member of the Republican Party. Previously he served as the U.S. Representative for South Carolina's 3rd congressional district.

Graham was born in Central, South Carolina, where his parents, Millie and Florence James Graham, ran a liquor store, the Sanitary Cafe. After graduating from D. W. Daniel 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 his sister was 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.