
Dean Allan DeBlois (/dəˈblwɑː/ də-BLWAH; born June 7, 1970) is a Canadian filmmaker and writer. He is best known for writing and directing the Oscar-nominated animated feature films Lilo & Stitch for Walt Disney Animation Studios (with Chris Sanders), the How to Train Your Dragon film trilogy for DreamWorks Animation (the first film also with Sanders), and directing the documentary Heima about the Icelandic band Sigur Rós.

How to Train Your Dragon
2025 · as Viking (uncredited)

Floyd Norman: An Animated Life
2016 · as Himself

Soaring to Life: The Making of How to Train Your Dragon
2025 · as Self

The Story Room: The Making of 'Lilo & Stitch'
2004 · as Self

Where No One Goes: The Making of How to Train Your Dragon 2
2015 · as Himself

How to Train Your Dragon: The Technical Artistry of Dragon
2010 · as Self