In Lost, what was the name of Claire Littleton’s baby?

In Lost, Claire Littleton’s baby was named Aaron Littleton.

Aaron is born on the island after the crash of Oceanic Flight 815. His birth becomes a major early storyline because Claire is pregnant when the plane crashes, and the survivors must help her through the pregnancy and delivery under dangerous conditions.

The baby’s name, Aaron, is chosen before his birth and remains central to Claire’s identity as a mother. The series also uses Aaron in several debates about whether he should remain on the island or be taken away from it.

Aaron is sometimes confused with Walt Lloyd, another child associated with the survivors. Walt is Michael Dawson’s son, while Aaron is Claire’s son. Aaron’s later removal from the island is connected to the Oceanic Six storyline and Kate Austen’s public claim that he is her son.