Lodestar may refer to:
- Polaris
- any star used in celestial navigation
- metaphorically, any guiding principle
- Lodestar (band), an English band formed in 1996
- Guiding Star (2007 album title)
- CM Lodestar electric chain hoist, used in manufacturing industries
- GWR 4000 Class 4003 Lode Star, a British steam locomotive
- Lockheed Model 18 Lodestar, a passenger transport aircraft of the World War II era.
- Lodestar method
- Lodestar (novel), a 2000 science fiction novel by Michael Flynn
- Lodestar (Anderson), a short story by Poul Anderson
- Lodestar, an alien transformation in the third season of Ben 10: Alien Force