What was the name of McDonald's first nationally recognized clown mascot?

McDonald's first nationally recognized clown mascot was Ronald McDonald.

Ronald McDonald was created for McDonald's advertising in the early 1960s and quickly became the chain's most prominent character. The first widely known portrayal was performed by television personality Willard Scott, who had previously played a clown character called Bozo the Clown.

The character's design used strong visual signals for children: a red wig, face paint, colorful clothing, and a bright yellow jumpsuit. Ronald was later placed at the center of McDonaldland, where he appeared with other fictional characters.

Ronald McDonald is distinct from Speedee, the earlier mascot associated with the restaurant's speed-service identity. His arrival represented McDonald's shift toward family-oriented advertising and a more theatrical brand personality.