Sam "Lightnin’" Hopkins (March 15, 1912 — January 30, 1982) was a country blues guitarist, from Houston, Texas, United States.
Hopkins' style was born from spending many hours playing informally without a backing band. His distinctive fingerstyle playing often included playing, in effect, bass, rhythm, lead, percussion, and vocals, all at the same time. He played both "alternating" and "monotonic" bass styles incorporating imaginative, often chromatic turnarounds and single note lead lines. Tapping or slapping the body of his guitar added rhythmic accompaniment.