The Reality Mill is a media company in Grand Theft Auto V.
The Reality Mill main focus is the production of reality television shows. Their name satirizes the nature of reality television; since a mill churns out hundreds of mass produced items at a time. Their logo features a security camera, showcasing the fact that contestants are perpetually filmed.
Their in-game website is www.therealitymill.com. For $500 dollars, deducted instantly from the player's bank account, the player can take an "introductory E-workshop" satirising the type of people who apply for reality television.