Bionicles are a LEGO theme that combines the terms Biological & Technic. They began as a LEGO element kit, and have expanded to include books, comic books and Computer-Generated Imagery movies.

The Bionicle theme is set in a science fiction based world. Part organic, part machine, the story based line of toys first appeared in 2001 and was canceled in 2010. It was replaced by the Bionicle compatible LEGO Hero Factory theme. Although the Bionicle sets are no longer made, the story arc briefly continued online. Four films and around thirty books have been made, and DC has published comic books based on the Bionicle theme.