M&M’s are among the world’s most recognizable chocolate candies, enjoyed in theaters, at celebrations, and in homemade desserts. Their colorful candy shells and chocolate centers have remained popular for generations. However, the meaning behind the two letters printed on each candy dates back to an important business partnership in 1941.
The initials M&M represent Mars and Murrie. Forrest Mars Sr., whose father founded the Mars candy company, partnered with Bruce Murrie, the son of Hershey executive William Murrie. Their collaboration combined Mars’s business ambitions with access to chocolate supplies from Hershey, helping establish the original product.
Inspired by sugar-coated chocolates reportedly consumed during the Spanish Civil War, M&M’s featured a protective shell that reduced melting during handling. Introduced in 1941, the candies became useful snacks for American military personnel during World War II. Early versions were simpler in appearance, but additional colors and varieties gradually expanded their appeal.
Over time, peanut, peanut butter, and other M&M’s varieties joined the original chocolate candies. Seasonal packaging and memorable advertising further strengthened the brand’s international popularity. Although the partnership between Mars and Murrie eventually ended, Forrest Mars continued developing the business. Today, the familiar initials preserve the names of the two men whose collaboration helped create a globally recognized candy brand.