Lonnie Mack (born Lonnie McIntosh, July 18, 1941) is an American rock, blues, and country guitarist and vocalist.

Mack was born in Dearborn County, Indiana. Best known for his 1963 instrumental, "Memphis", he has been called "a pioneer in rock guitar soloing" and a "ground-breaker" in lead guitar virtuosity. Today, he is widely regarded as a key figure in expanding the role of the electric guitar in rock music.