John Grady
John Grady may refer to:
- John C. Grady, American lawyer and politician
- John D. Grady, American criminal
- John Grady (baseball), American baseball player
- John Grady (Medal of Honor), United States Navy officer and Medal of Honor recipient
- John Grady (sociologist), American sociologist
- John Grady (author), Australian author and social scientist
- John F. Grady, U.S. federal judge
- John Grady (politician), Scottish politician