Samuel Alfred Craig (November 19, 1839 – March 17, 1920) was a Civil War soldier, attorney, and a Republican member of the U.S. House of Representatives from Pennsylvania.

He attended the common schools of his native town and Jefferson College in Canonsburg, Pennsylvania.

He was commissioned captain in the Veteran Reserve Corps, United States Army, and served continuously four years and three months.

Following the war, Craig studied law, was admitted to the bar in 1876 and commenced practice in Brookville.

He was elected district attorney of Jefferson County, Pennsylvania, in 1878.