How to Train Your Dragon 2 is a 2014 American animated fantasy film loosely based on the book series of the same name by Cressida Cowell. Produced by DreamWorks Animation and distributed by 20th Century Fox, it is the sequel to How to Train Your Dragon (2010) and the second installment in the trilogy. Written and directed by Dean DeBlois and produced by Bonnie Arnold, the film stars the returning voices of Jay Baruchel, Gerard Butler, Craig Ferguson, America Ferrera, Jonah Hill, Christopher Mintz-Plasse, T.J. Miller, and Kristen Wiig, along with Cate Blanchett, Djimon Hounsou, and Kit Harington as new additions. Set five years after the events of the first film, the film follows twenty-year-old Hiccup and his friends as young adults as they encounter Valka, Hiccup's long-lost mother, and Drago Bludvist, a madman who wants to conquer the world.

How to Train Your Dragon is a series of children's books written by British author Cressida Cowell. The books are set in a fictional Viking world, and focus on the experiences of protagonist Hiccup Horrendous Haddock the Third, as he overcomes obstacles on his journey of "becoming a hero, the hard way". The books were published by Hodder Children's Books in the UK and by Little, Brown and Company in the US. The first book was published in 2003 and the 12th and final one in 2015. By 2015, the series had sold more than seven million copies around the world. The books have subsequently been adapted into a media franchise consisting of three animated feature films, several television series and other media, all produced by DreamWorks Animation.