Is it possible to share rented movies on Apple TV with others?

No, it is not possible to legally share rented movies on Apple TV with others. When one rents a movie through Apple TV, which is part of the iTunes Store's services, they are agreeing to a set of terms and conditions that typically prohibit unauthorized distribution or sharing. The rental is tied to the Apple ID used to rent the movie and can be streamed on any device logged in with that same Apple ID. However, sharing the account details with others to allow them to watch the rented content would violate Apple's terms of use. Additionally, the DRM (Digital Rights Management) protections embedded in the rented content prevent it from being copied or shared with others who do not have access to the original renting Apple ID.