John Horner
John Horner may refer to:
People
- John Francis Fortescue Horner, British barrister
- John M. Horner, founder of Union City, California
- John R. Horner, American paleontologist
- John S. Horner, American politician
- John Horner (British politician), British firefighter, trade unionist and politician
- John Horner (organist), organist, choirmaster and music teacher in South Australia
- John Horner (police officer), American chief of police of Los Angeles in 1885
- John Horner (Rector of Lincoln College, Oxford), Oxford college head
- Jack Horner, Canadian rancher, politician and cabinet minister
Fictional characters
- John Horner, in "The Adventure of the Blue Carbuncle", a Sherlock Holmes story by Sir Arthur Conan Doyle