Mars alluded to the deal, first reported by Deadline, in a Thursday tweet that included a video of his rendition of the iconic Disney song "When You Wish Upon a Star," which was written for Disney's 1940 film adaptation of "Pinocchio."
He accompanied the video with lyrics from the song and the hashtags #MarsMeetsTheMouse, #ImGoingToDisneyland and #YESSS.
No other details about the theatrical project were immediately available.
Mars, who has sold more than 200 million singles worldwide, has two film acting credits under his belt: 1992's "Honeymoon in Vegas" and "Rio 2" in 2014.
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