Other
- Kiev Chaika Airfield — in Ukraine
- CHAYKA — a radio navigation system
- Chayka — the call sign for Valentina Tereshkova
- Chayka — a village in Provadiya Municipality, Varna Province, Bulgaria.
- Chayka, Atyrau - a village in western Kazakhstan
- The Seagull — a play by Anton Chekhov
- Seagull Experimental Design Bureau
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