Sky Captain and the World of Tomorrow, often shortened to Sky Captain, is a 2004 science fiction action-adventure film written and directed by Kerry Conran in his directorial debut, and produced by Jon Avnet, Sadie Frost, Jude Law and Marsha Oglesby. It stars Jude Law, Gwyneth Paltrow, and Angelina Jolie. It is an example of "Ottensian" (pre-WWII) dieselpunk.

Dieselpunk is a retrofuturistic subgenre of science fiction similar to steampunk or cyberpunk that combines the aesthetics of the diesel-based technology of the interwar period through to the 1950s with retro-futuristic technology and postmodern sensibilities. Coined in 2001 by game designer Lewis Pollak to describe his tabletop role-playing game Children of the Sun, the term has since been applied to a variety of visual art, music, motion pictures, fiction, and engineering.