Otis Verries Hicks, known as Lightnin’ Slim (March 13, 1913 – July 27, 1974), was an American Louisiana blues musician, who recorded for Excello Records and played in a style similar to its other Louisiana artists. The blues critic ED Denson ranked him as one of the five great bluesmen of the 1950s, along with Muddy Waters, Little Walter, Howlin’ Wolf and Sonny Boy Williamson.

According to most sources, Otis Hicks was born on a farm outside St. Louis, Missouri, but the researchers Bob Eagle and Eric LeBlanc stated, on the basis of his draft card, that he was born in Good Pine, Louisiana. He moved to Baton Rouge at the age of thirteen. Taught guitar by his older brother Layfield, Slim was playing in bars in Baton Rouge by the late 1940s.

His first recording was “Bad Luck Blues” (“If it wasn’t for bad luck, I wouldn’t have no luck at all”), released by J. D. “Jay” Miller‘s Feature Records in 1954. It was Miller, who had a penchant for picking colourful artists’ names, who christened him “Lightnin’ Slim”. Slim then recorded for Excello Records for twelve years, starting in the mid-1950s, often collaborating with his brother-in-law Slim Harpo and with the harmonica player Lazy Lester.