John Grayson (disambiguation)

John Grayson (1871–1936) was an English cricketer active in the early 1890s.

John Grayson may also refer to:

• John B. Grayson (1806–1861), U.S Army lieutenant-colonel in the Mexican–American War, later Confederate brigadier general in the American Civil War
• John Grayson (Heroic Publishing), a fictional superhero better known as Icestar