McDonald's first national menu item created specifically for children was the Happy Meal.
The Happy Meal was introduced nationally in the United States in 1979. It combined a child-sized meal with a toy or other promotional item, turning the packaging and the meal into a branded experience aimed directly at families.
The concept had regional predecessors and was influenced by children's restaurant meals developed before the national launch. Its importance in McDonald's branding came from linking food, colorful packaging, collectible promotions, and family occasions in one recognizable product.
The Happy Meal is sometimes confused with McDonald's earlier child-oriented advertising or with the restaurant's mascots. Those were promotional elements; the Happy Meal was a named menu package. Its contents have changed by market and era, but the product name and child-focused identity remain consistent.