What is the name of the fast-food chain known for its 'Whopper'?

The fast-food chain known for its “Whopper” is Burger King.

Burger King introduced the Whopper in 1957 as a large hamburger designed to stand out from competing fast-food offerings. Co-founder James McLamore reportedly created it after noticing the success of a large burger sold by a restaurant in Gainesville, Florida. The name was chosen to suggest something unusually big.

The Whopper became Burger King’s signature product and inspired the advertising phrase “Home of the Whopper.” It is typically made with a flame-grilled beef patty, sesame-seed bun, mayonnaise, lettuce, tomato, pickles, ketchup, and onions, although ingredients vary by market.

A common mix-up is confusing the Whopper with McDonald’s Big Mac or Wendy’s Dave’s Single. Burger King also sells related versions, including the smaller Whopper Jr. and region-specific variations. In Australia, the same product is sold through Burger King’s local franchise under the Hungry Jack’s name.