Sinclair
- Augustus Sinclair
- Babylon 5
- BoJack Horseman
- Bob Sinclar
- Clan Sinclair
- Clive Sinclair
- Dinosaurs (TV series)
- Doctor Who
- Jeffrey Sinclair
- Lake Sinclair
- Living Single
- Lord Sinclair
- Marvel Comics
- Mount Sinclair
- Saint Clair (disambiguation)
- Saint Clare (disambiguation)
- Santa Clara (disambiguation)
- Sinckler
- Sinclair (high school)
- Sinclair (singer)
- Sinclair (surname)
- Sinclair Broadcast Group
- Sinclair C5
- Sinclair Community College
- Sinclair Freeway
- Sinclair Lewis
- Sinclair Mills, British Columbia
- Sinclair Oil Corporation
- Sinclair Radionics
- Sinclair Research
- Sinclair Secondary School
- Sinclair Township, Minnesota
- Sinclair, Iowa
- Sinclair, Manitoba
- Sinclair, West Virginia
- Sinclair, Western Australia
- Sinclair, Wyoming
- Sinclaire
- Stranger Things
- The Persuaders!
- The Saboteur
- Timex Sinclair
- USS Sinclair (DD-275)
- Wednesday (TV series)
- Wolfsbane (character)