Barbie doll's full name is Barbara Millicent Roberts.

Barbie doll’s full name is Barbara Millicent Roberts.

In March 1959, a doll named “Barbie” launched onto the American toy market, sporting a black-and-white striped bathing suit, pouty red lips and a sassy blonde ponytail. The leggy, 11-inch plastic figure—full name: Barbara Millicent Roberts—was the first mass-produced toy doll in the U.S. with adult features. She would go on to become one of the most iconic playthings in history.

Source