The artwork bears the tagline "This summer four boys become men" and shows Will (Simon Bird), Simon (Joe Thomas), Jay (James Buckley) and Neil (Blake Harrison) in the midst of their lads' holiday in Crete.
View the Inbetweeners Movie poster below:
Harrison told Digital Spy earlier this year that the feature film spinoff might not be the last audiences see of The Inbetweeners.
"It's way too early to tell wherever anything's going to go," he said. "At the moment things seem to be quite well wrapped up, but you can never say never, so whether we'll be back for anything else in the future we just don't know."
The Inbetweeners Movie will open in UK cinemas on August 17.
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Watch the Inbetweeners Movie trailer below: