Multiple sources have confirmed to both Variety and The Hollywood Reporter that a show is in the very early stages of development.
No crew or talent have been confirmed for the project yet, although conversations are reportedly taking place with several writers.
It’s unclear which part of the Harry Potter timeline would be focused on in the series.
Warner Bros and HBO Max have denied the rumour, releasing a statement saying “there are no Harry Potter series in development at the studio or on the streaming platform”.
The eight films created from J.K. Rowling’s seven books grossed more than $US7 billion at the box office.
More than 500 million copies of the novels have been sold across the world.