Formally he's referred to as John F. Kennedy or sometimes John Kennedy; his friends and family called him Jack, so he was known to some as Jack Kennedy. But he is only very rarely referred to as Jack F. Kennedy. The most common names are President Kennedy, John F. Kennedy and JFK.
John Fitzgerald Kennedy (official name) was called Jack Kennedy (nickname) by his family and friends. Jack is a common nickname for John.
John F. Kennedy was nicknamed Jack. If John Tyler, John Adams, or John Quincy Adams was called Jack, it's not obvious.
JFK John Kennedy John F. Kennedy John Fitzgerald Kennedy Jack Kennedy Jack Lieutenant Kennedy "Crash" Kennedy "Shaft" Congressman Kennedy Senator Kennedy President Kennedy JFK, Sr.
His full name was John Fitzgerald Kennedy.
JACK
John Fitzgerald "Jack" Kennedy
Jack Kennedy belonged to the Democratic Party.
No, it was John. Jack is a somewhat common nickname for John.
John F. Kennedy was often called "Jack"/
they had nine rooms in their house "Jack" or John F. Kennedy was the second oldest.
Jack Ruby
Caroline Kennedy was the daughter of John F. Kennedy