Williams Street
| Williams Street | |
| Formerly | Ghost Planet Industries (1994–1999) | 
| Company type | Subsidiary | 
| Industry | |
| Genre | |
| Founded | 1994 | 
| Founders | |
| Headquarters | |
| Key people | 
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| Products | |
| Parent | 
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| Subsidiaries | Williams Street Records Williams Street West Williams Street East Williams Street DVDs Williams Street Games | 
Williams Street Productions, LLC, formerly known as Ghost Planet Industries, is an American animation and live action television production studio owned by the Warner Bros. Television Studios division of Warner Bros., a unit of Warner Bros. Discovery. The studio is the in-house production arm of Cartoon Network's nighttime programming block Adult Swim. Mike Lazzo and Keith Crofford of The Cartoon Network, Inc. oversaw operations for the building for most of its existence.
On December 16, 2019, co-founder Lazzo retired from the company, with business partner and co-founder Crofford retiring the following year. Michael Ouweleen was named president of Adult Swim on April 29, 2020 as well as The Cartoon Network, Inc. from November 27, 2019 to July 1, 2020 and since May 13, 2022.