Big John

Big John may refer to:

• Big John, a rapper/entertainer born John McCullough from Detroit, MI. Founder and CEO of Hanchett Mansion ENT.
• John Cornyn, a United States Senator from Texas.
• "Big" John McCarthy, the former head referee for the Ultimate Fighting Championship (UFC), commentator and analyst.
• Ivan Radočaj, a former Canadian pro wrestler
• Big John Studd, a professional wrestler
• "Big Bad John", a country song originally performed by Jimmy Dean
• Big John, bodyguard of rocker Bret Michaels who appears with Michaels on Rock of Love
• A nickname for the John Hancock Center in Chicago, Illinois
• The US aircraft carrier John F. Kennedy
• "Big" John Carew, Norwegian footballer currently with West Ham
• "Big" John Hartson, Welsh footballer
• Big John's, a fast food chain based in the West Midlands region, England
• Big John Steak & Onion, sub chain based in Michigan
• Big John Duncan, former guitarist for The Exploited
• Big John, Chevrolet V8-powered, streamlined two-wheeled vehicle built James Harold "Stormy" Mangham and driven on the Bonneville Salt Flats in 1963