John Rock

John Rock may refer to: *John Rock (abolitionist) (1825–1866), American abolitionist *John Rock (nurseryman) (1836-1904), owner of the California Nursery Company *John Rock (physician) (1890–1984), co-inventor of the birth control pill *John Rock, an alias of Danish singer Jon Nørgaard (born 1985) *Johns Rock, a hazard to shipping in Danish Waters Provided by Wikipedia