John Grady

John Grady may refer to:


 * John C. Grady (1847-1916), American lawyer and politician
 * John D. Grady (died 1880), American criminal
 * John Grady (baseball) (1858–1924), American baseball player
 * John Grady (Medal of Honor) (1872–1956), United States Navy officer and Medal of Honor recipient
 * John Grady (sociologist) (born 1960s), American sociologist
 * John Grady (author) (1923–1986), Australian author and social scientist
 * John F. Grady (1929–2019), U.S. federal judge
 * John Grady (politician), Scottish lawyer and MP