The `Firework` hitmaker`s `Part of Me 3D` concert film will be promoted by the soft drinks firm in a series of advertisements across radio, TV, print and online media ahead of its release on July 5.
As part of the deal, fans will be given the chance to win tickets to the world premiere of the film - which will be streamed live online by Pepsi - in Los Angeles, at which Katy will perform.
LeeAnne Stables, an executive for Paramount - who are distributing the film - said: "Pepsi is one of the world`s leading brands, and this integrated partnership provides an incredible platform for us to build fan anticipation to see this exciting glimpse into Katy`s world when the movie comes to theatres this summer."
As well as chronicling Katy`s 2010 and 2011 `California Dreams` tour, the movie also features a series of backstage clips and sees the star speak candidly on a range of subjects, including her religious upbringing and her struggle to find success.
A teaser trailer for the film also included glimpses of newspaper headlines detailing her split from husband Russell Brand in December.