What was the name of the Flintstones' baby girl?

The Flintstones' baby girl was named Pebbles. Pebbles Flintstone is the daughter of Fred and Wilma and became one of the most recognizable child characters in the franchise.

Pebbles was introduced during the original series in the third season, when the Flintstones became parents. Her arrival expanded the show's family-sitcom premise: stories could now focus on parenting, baby care, family celebrations, and the comic difficulties of raising a child in Bedrock's dinosaur-powered world.

Pebbles is often confused with Bamm-Bamm, but they are different characters. Bamm-Bamm is the exceptionally strong adopted son of Barney and Betty Rubble, while Pebbles is Fred and Wilma's daughter. In later spin-offs, Pebbles is shown growing up, including as a teenager and an adult, and her relationship with Bamm-Bamm becomes an important part of the franchise's continuing story.