Stellar is an adjective referring to one or more stars. It may also refer to:
- Hyundai Stellar, a car built by Hyundai Motor Company
- Stellar 7 a 3D wireframe-based game for the Apple II computer system
- O2 XDA Stellar, an HTC mobile phone sold in the UK market by O2
- Stellar Airpark, an airport near Chandler, Arizona, USA
- Stellar Group (construction company), construction company in Florida, USA
- Stellar Charter School, a school in Redding, California, USA
- Stellar (magazine), an Irish lifestyle and fashion magazine
- Stellar Information Systems, a computer company in Gurgaon, India
- Stellar School System, a private school in Lahore, Punjab, Pakistan
- Stellar Airways, an airline in the Democratic Republic of the Congo
- Stellar, slang for 'very good'