Michael Alexander Johnson (born 29 March 1968), better known as Daddy Screw is a Jamaican dancehall deejay best known for his work in the 1980s and 1990s.

Johnson was born and raised in Kingston, Jamaica, and first began to deejay while still a student at Vauxhall Comprehensive High School. He released his first single ("Dimbo Bucket") in 1984 and worked on sound systems such as Black Stone. He recorded "Madda Mampie" for Tuff Gong Records, and through Tuff Gong producer Tony Kelly he met Dave Kelly, who produced much of his later work, including several Jamaican hit singles. Screw also toured as part of Kelly's 'Mad House Crew', and performance as part of the 'Champions In Action' tour with Tiger, Sanchez, and Terror Fabulous. Two albums were released in the 1990s — Loverman (1993, VP) and Multiple Choice (1996, Steely