John A. Gannon (September 16, 1923 – May 31, 1997) was an American labor union leader.
During World War II, he served in a naval intelligence unit.
In 1949, he became a firefighter, in Cleveland, and joined the International Association of Fire Fighters.
While leader of the union, he focused on improving the health and safety of firefighters, and created the IAFF Burn Foundation, which funded research into the treatment of burns.
He served under Reagan and Bush, then Bill Clinton appointed him as acting chair of the council.