John Hubbard
John or Jack Hubbard may refer to:
Public officials
- John Hubbard (Maine politician), American physician, educator and Democratic legislator
- John F. Hubbard, New York politician
- John F. Hubbard Jr., New York politician
- John Henry Hubbard, American legislator
- John Hubbard, 1st Baron Addington, English financier
- John Hubbard (admiral), American naval officer
- John Hubbard, 3rd Baron Addington, English legislator and administrator
Scholars
- John R. Hubbard, American educator, historian and diplomat
- John Hubbard (physicist), English physicist
- John H. Hubbard, American mathematician and educator
Sportspeople
- Jack Hubbard (American football), American college football player
- Johnny Hubbard, South African footballer
- Jack Hubbard (rugby union), English international rugby union player
- Jack Hubbard (rugby league), Australian rugby league player
Others
- John Hubbard (convict), British clerk convicted of forgery and deported to Western Australia in 1865
- John Hubbard (actor), American actor
- John Hubbard (artist), American painter