The Clockwork Girl is an all-ages/science fiction/fantasy comic series created by Sean O'Reilly and Kevin Hanna and inspired by Hanna's earlier zine "Clockwork Girls hate Electronic Boys", that ran for five issues and was published in a collected edition for the first time in 2008.

While she explores the wonders of an ordinary world she meets an amazing mutant boy and they share a friendship that must overcome their warring families.

In 2008, Telefilm Canada announced that they had funded the property for a possible future film adaptation.

All of the events of the books take place (for the most part), in the city of Harfang.

The series has been collected into a hardcover volume: The film The Clockwork Girl was released in early 2014.