Northstar may refer to:
- Northstar, a Marvel Comics superhero
- Northstar (band), a band from Alabama
- Northstar at Tahoe, a ski resort in the Lake Tahoe area of California
- Northstar (demogroup), a Swedish demoscene group
- Northstar (rap group), a rap group affiliated with the Wu-Tang Clan
- Northstar, a GM Premium V engine
Northstar may also be an abbreviated name for:
- Northstar System, Cadillac's trademarked name for automobile features, including the Northstar V8 engine
- NorthStar Horizon, an early microcomputer from Processor Technology
- NorthStar Communications Group, a subsidiary of BE&K
- Northstar Aerospace, a Canadian industrial technologies company trading on the TSX
- Northstar Trade Finance, a Canadian company offering financing to buyers of Canadian goods and services
- Northstar Corridor, a commuter rail line under development in Minnesota
- NorthStar Academy Online School, a Christian internet high school
- Northstar Electronics, an electronics firm
