Prospector may mean:
- Prospecting, exploring an area for natural resources such as minerals, oil, flora or fauna
- Prospector (library catalog), a unified catalog for Colorado and Wyoming
- Prospector (passenger train), a passenger train operated by the Denver & Rio Grande Western railroad
- Prospector (spacecraft), a planned lunar probe, canceled in 1962
- Prospector, a search engine for plastic material datasheets developed by IDES Inc.
- Prospector, an online business information service provided by IRD Group
- Prospector, a brand of pencils
- Prospector, a space exploration roguelike