Tad, the Lost Explorer (Spanish: Las Aventuras de Tadeo Jones) is a 2012 Spanish 3D computer-animated adventure comedy film directed by Enrique Gato. The film is a spinoff of Gato's 2004 short film, Tadeo Jones and its sequel Tadeo Jones and the Basement of Doom, and while technically based on the shorts, the film was mainly adapted from the Spanish graphic novel Tadeo and The Secret of the Toactlum, illustrated and co-written by Juan López Fernández (Jan) and written by Javier Barreira, Gorka Magallón, and Enrique Gato. The film was adapted and written by Javier Barreira, Gorka Magallón, Ignacio del Moral, Jordi Gasull and Neil Landau. The film's music was composed by Zacarías M. de la Riva. The English cast features voices of Kerry Shale, Ariel Winter, Bruce Mackinnon, Mac McDonald, Liza Ross, Cheech Marin and Adam James. The film was produced by Telecinco Cinema, El Toro Picture, Lightbox Entertainment, Ikiru Films, Telefónica Producciones, and Media Networks, with the participation of AXN, Canal Plus and TVC.
The film premiered at the Annecy International Animated Film Festival on 5 June 2012 and was theatrically released on 31 August 2012 in Spain by Paramount Pictures. The film received negative reviews from American critics, but it was well received in Spain and it earned €45 million on a €8 million budget, making it a box-office hit.
It was nominated for 5 Goya Awards, winning 3 for Best Animated Film, Best New Director and Best Adapted Screenplay at the 27th Goya Awards.
A sequel, titled Tad the Lost Explorer and the Secret of King Midas, was released in 2017.