John Randall may refer to: John Randall (Annapolis mayor) (1750–1826), mayor of Annapolis, Maryland and colonel in the American Revolution Sir John Randall (physicist) (1905–1984), British physicist, developer of the cavity magnetron John Randall, Baron Randall of Uxbridge (born 1955), British Conservative Party politician, former MP for Uxbridge and South Ruislip John A. Randall (1881–1968), President of the Rochester Institute of Technology John Randall (organist) (1715–1799), Professor of Music, Cambridge University John Ernest Randall (1924–2020), American ichthyologist, former director of the Oceanic Institute in Hawaii John Herman Randall, Jr. (1899–1980), American philosopher, author and educator John Witt Randall (1813–1892), American zoologist and poet John Randall (politician) (died 1869), American politician John Randall (Puritan) (1570–1622), English puritan divine John Randall (public servant), President of the National Union of Students, 1973–1975 John Randall (shipbuilder) (1755–1802), English dockyard owner