Who coined the name “Big Mac” for McDonald's signature burger?

Esther Glickstein Rose coined the name “Big Mac” for McDonald's signature burger.

Rose was a McDonald's advertising secretary who suggested the name in 1967. The sandwich had previously been developed and tested by franchisee Jim Delligatti, but Rose's name gave the product its enduring brand identity.

The Big Mac was introduced nationally in the United States in 1968. Its name became one of McDonald's most recognizable pieces of product branding and helped distinguish the sandwich from ordinary hamburgers.

A frequent mix-up credits Delligatti with the name because he created the burger itself. Delligatti developed the sandwich, while Rose is credited with proposing “Big Mac.”