Caillou is a children's television series.
Caillou may also refer to:
Caillou (book series), the series of books on which the television series is based Caillou, an extended-play record by Andrew Wade
People with the surname Alan Caillou, the pen name of Alan Lyle-Smythe Edmond de Caillou, Gascon night Marie Caillou, French graphic artist
See also Cailloux, French surname Gros Caillou ("Big Pebble"), a landmark in Lyon, France