There's some debate about this one, and Justin Bieber's representatives have never confirmed or denied the rumors either way, so we'll leave this one up to you to decide. At one point, it was reported that Bieber was being lined up to star in a movie called 'Uber Girl.' This was somewhere around 2016, and nobody's even been able to independently verify that such a film ever even existed. If it did or does, it's yet to make it all the way to a full production.
Despite the shadowy nature of the alleged film, many mainstream media outlets said that Bieber had been offered a part in the film as a Canadian pop star (so it shouldn't have been a major stretch for him), but ultimately declined because his character would have been gay, and would also have been required to shoot love scenes. As Bieber is neither a) an actor or b) gay, you have to wonder why anyone would have considered him for the part in the first place.