Johnny Nitro (born John Lawrence Newton; September 2, 1951 – February 19, 2011) was a blues vocalist, guitarist, and band leader in the San Francisco Bay Area. He served as a longtime entertainer and community figure in the North Beach district. He regularly played at local venues, such as The Saloon and Lou's Pier 47, with his band, Johnny Nitro & the Doorslammers. He also served as a mentor to musicians, such as Tommy Castro. In his lifetime, Nitro played with a range of blues artists, including Albert Collins, Albert King, and Sunny Rhodes.