Warner Bros. is a world-wide film and television company based California, owned by Time Warner.
- New Line Cinema, film studio of The Lord of the Rings (film series)
- Warner Bros. Interactive Entertainment, publisher of The Lord of the Rings: Aragorn's Quest, The Lord of the Rings: War in the North and Guardians of Middle-earth.
- Turbine, developers and publishers of The Lord of the Rings Online.
- Snowblind Studios, developer of The Lord of the Rings: War in the North.
- Monolith Productions, developer of Guardians of Middle-earth.