Children

An ultrasound of Aaron, one of the children on Lost

Children and pregnancies are both regular topics on Lost.

Occurrences

The following children were seen on the Islands or are related to the main characters:

	Mother	Father	Relevance
Aaron Littleton	Claire Littleton	Thomas	Off the Island
Annie	Unknown	Unknown	On the Island
Alexandra Rousseau	Danielle Rousseau	Robert	On the Island, Deceased
Ana Lucia's unborn baby	Ana Lucia Cortez	Danny	Unborn Child of Ana Lucia
Clementine Phillips	Cassidy Phillips	Sawyer	Daughter of Sawyer
Emma	Unknown	Unknown	On the Island
Karl	Unknown	Unknown	On the Island
Julian	Rachel	Uncertain	Juliet's nephew
Megan Pace	Karen Pace	Liam Pace	Niece of Charlie
Ji Yeon Kwon	Sun-Hwa Kwon	Jin Kwon	Sun's child, currently in Korea
Walt Lloyd	Susan Lloyd	Michael Dawson	Left island with father
Zach	Unknown	Unknown	On the Island
Charlie Hume	Penny	Desmond	Off the Island
Ethan Rom	Amy	Horace Goodspeed	On the Island in 1977
Miles Straume	Lara Chang	Pierre Chang	On the Island in 1977

Details of when any child was shown or was mentioned in Lost are given in the next sections, sorted by episode.

Megan Pace was playing in the backyard when Charlie visited Liam. ("The Moth")
Sawyer aborted a con after he saw a boy that reminded him of his past. ("Confidence Man")
Aaron Littleton was kidnapped in utero, along with his mother. ("Raised by Another")
An unborn baby was lost after Christian Shephard accidentally killed Beth while operating on her drunk. ("All the Best Cowboys Have Daddy Issues")
Shannon spent a year in Paris watching a child named Laurent. That's when she learned the song that helped Sayid understand the maps he took from Rousseau. ("Whatever the Case May Be")
Aaron Littleton's mother, Claire, escaped Ethan Rom. ("Special")
Jin threatens to beat up Byung Han in front of his daughter. ("...In Translation")
A kid talked to Locke about Mousetrap in a toy store ("Deus Ex Machina").
Aaron Littleton was born. ("Do No Harm")
Alex Rousseau was kidnapped as a baby, and raised by the Others. ("Exodus, Part 1")

The poor man's son needed to go to the bathroom. ("...And Found")
Sophie was cared for by Shannon for a year. ("Abandoned")
Zach and Emma were both taken by the Others. ("The Other 48 Days")
Ana Lucia's unborn baby was lost after she was shot. ("Collision")
Charlie has a flashback in which he and his band play in a big child's crib for a commercial. ("Fire + Water")
Sun was confirmed as pregnant. ("The Whole Truth")
Christian Shephard demanded to see his daughter. ("Two for the Road")
Charlotte Malkin's "death" and "miraculous revival" summoned Mr. Eko to investigate on behalf of the Catholic Church. ("?")

Karl was shown as a teenaged boy imprisoned by the Others. ("A Tale of Two Cities")
Bobby was a boy living in the commune. ("Further Instructions")
A picture of Clementine Phillips was shown to Sawyer while Sawyer was in prison. ("Every Man for Himself")
Daniel asked Mr. Eko "Are you a bad man? My mother says you are a bad man." ("The Cost of Living")
Juliet is revealed to be a fertility doctor. She has impregnated a male field mouse and successfully uses a new drug to make her sister fertile. Dr. Alpert asks her to examine the CT scan of an unusual womb. ("Not in Portland")
While staying in Phuket a young Thai boy sold Jack sodas on the beach. ("Stranger in a Strange Land")
The children kidnapped by the Others, including Emma and Zach are seen. ("Stranger in a Strange Land")
The children are later seen again with the Others at the ruins. ("The Brig")

Many characters have had flashbacks that feature themselves as children, and some like Charlotte have been seen as children on the Island's flashes: