In McDonald's branding history, who coined the name “Big Mac” for the chain's signature hamburger?

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

Rose was a 21-year-old advertising secretary at McDonald's corporate headquarters when she suggested the name in 1967. The sandwich had been developed by franchisee Jim Delligatti, but the product name came from Rose, who received no public recognition for many years.

The Big Mac was first introduced in the United States in 1968 after regional testing. Jim Delligatti is therefore correctly associated with creating the sandwich, while Esther Glickstein Rose is associated with naming it. The distinction matters because product development and brand naming were separate contributions.