Apple handset users can now stream and download thousands of movies and TV shows from the storefront via their devices.
Customers can access any of their past purchases through the iPhone and iPod Touch app, and Amazon Prime subscribers can take advantage of the 30,000 video-stocking Prime Instant Video library.
The new iOS application also includes a Watchlist feature, enabling users to keep track of all of the content they have earmarked for later viewing.
Sony's PlayStation 3 became the first games console to host Amazon Instant Video when the service was rolled out for the system in April this year.
Amazon is yet to confirm plans to bring Instant Video to the UK.