Samuel McClain (April 15, 1943 – June 15, 2015), billed as Mighty Sam McClain, was an American soul blues singer and songwriter.

He was born in Monroe, Louisiana. As a five-year-old, he began singing in his mother’s Gospel Church. McClain left home when he was thirteen and followed local R&B guitarist, Little Melvin Underwood through the Chitlin’ Circuit, first as his valet and then as lead vocalist himself at 15.

While singing at the 506 Club in Pensacola, Florida he was introduced to the record producer and DJ, Papa Don Schroeder and in 1966, McClain recorded a cover version of Patsy Cline‘s “Sweet Dreams”. Several recording sessions at Muscle Shoals produced the further singles, “Fannie-May” and “In the Same Old Way”.