Les Cousins was a folk and blues club in the basement of a restaurant in Greek Street, in the Soho district of London, England. It had its heyday during the British folk music revival of the mid-1960s and was notable as a venue in which musicians of that period met and learnt from each other. As such, it was influential in the careers of, for example, Jackson C. Frank, Al Stewart, Marc Brierley, Davey Graham, Bert Jansch, John Renbourn, Sandy Denny, John Martyn, Alexis Korner, The Strawbs, Roy Harper and Paul Simon.