Around the World in Eighty Days (French: Le tour du monde en quatre-vingts jours) is a classic adventure novel by the French writer Jules Verne, first published in 1873. In the story, Phileas Fogg of London and his newly employed French valet Passepartout attempt to circumnavigate the world in 80 days on a ?20,000 wager (equal to ?1,324,289 today) set by his friends at the Reform Club. It is one of Verne's most acclaimed works.

The book has been adapted many times in different forms.

The best known film version was released in 1956, with David Niven and Cantinflas heading a huge cast. Many famous performers play bit parts, and part of the pleasure in this movie is playing "spot the star". The movie earned five Oscars out of eight nominations including Best Picture. This film was also responsible for the popular misconception that Fogg and company travel by balloon for part of the trip in the novel, which has prompted later adaptations to include similar sequences.