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List of 2019 California Sci-Fi Conventions
| Convention | Dates | Location |
|---|---|---|
| Cos-Losseum Cosplay Con San Diego 2019 | January 5, 2019 | Four Points by Sheraton San Diego San Diego, CA, USA |
| Gallifrey One 2019 | February 15-17, 2019 | Los Angeles Airport Marriott Los Angeles, CA, USA |
| ConDor 2019 | February 22-24, 2019 | Handlery Hotel San Diego San Diego, CA, USA |
| FOGcon 2019 | March 8-10, 2019 | Walnut Creek Marriott Walnut Creek, CA, USA |
| ConQuest Sac 2019 | March 22-24, 2019 | McClellan Conference Center Sacramento, CA, USA |
| CarrierCon 2019 | March 23, 2019 | USS Hornet Museum Alameda, CA, USA |
| Intergalactic Expo 2019 | May 5, 2019 | West Sacramento Civic Center West Sacramento, CA, USA |
| BayCon 2019 | May 24-27, 2019 | San Mateo Marriott San Francisco Airport San Mateo, CA, USA |
| WhedonCon 2019 | June 7-9, 2019 | Hilton Los Angeles Airport Los Angeles, CA, USA |
| Ghostbusters Fan Fest 2019 | June 8-9, 2019 | Sony Pictures Entertainment Culver City, CA, USA |
| AlienCon Los Angeles 2019 | June 21-23, 2019 | Los Angeles Convention Center Los Angeles, CA, USA |
| Menlo Park Comic Con 2019 | June 22, 2019 | Menlo Park Library Menlo Park, CA, USA |
| Replicon 2019 | June 22, 2019 | Castiac Studios Castiac, CA, USA |
| North American Discworld Convention 2019 | July 12-15, 2019 | The Westin Los Angeles Airport Los Angeles, CA, USA |
| Back to 1885 | September 5-9, 2019 | Columbia State Historic Park Columbia, CA, USA |
| SD Who Con 2019 | October 4-6, 2019 | Four Points by Sheraton San Diego San Diego, CA, USA |
| L.A. Comic Con 2019 | October 11-13, 2019 | Los Angeles Convention Center Los Angeles, CA, USA |
| November 8-10, 2019 | Los Angeles Convention Center Los Angeles, CA, USA |
|
| Loscon 2019 | November 29 - December 1, 2019 | Los Angeles Airport Marriott Los Angeles, CA, USA |
| The Los Angeles Empire Con 2019 | December 6-8, 2019 | Los Angeles Airport Marriott Los Angeles, CA, USA |
| Convention | Dates | Location |