Oerlikon may refer to:
- Oerlikon (Zürich), a district in the northern part of Zürich, Switzerland
- Zürich Oerlikon railway station located in Zürich
- OC Oerlikon (former Unaxis), a Swiss technology conglomerate, or one of its business units:
- Oerlikon Solar
- Oerlikon Balzers
- Oerlikon-Bührle, a company in Zürich, Switzerland that used to own Bally Shoe, Oerlikon Contraves, Pilatus Aircraft and Britten-Norman Aircraft, see Fairey Aviation Company
- Maschinenfabrik Oerlikon, the Oerlikon subsidiary later became Oerlikon-Bührle, and is now part of Asea Brown Boveri
- Oerlikon Contraves, a Swiss anti-aircraft artillery manufacturer founded in Zürich Oerlikon
- Oerlikon 20 mm cannon, an anti-aircraft cannon
- Oerlikon 35 mm twin cannon, an anti-aircraft cannon