| Karanja | |
| Native Name: | Uran Island |
| Other Name: | Caranja |
| Settlement Type: | city |
| Pushpin Map: | India Maharashtra |
| Pushpin Map Caption: | Location in Maharashtra, India |
| Coordinates: | 18.51°N 73.2°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Maharashtra |
| Subdivision Type2: | District |
| Subdivision Name2: | Raigad |
| Unit Pref: | Metric |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Marathi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
Karanja or Uran Island is a town in Uran, Raigad district of Maharashtra, India, about 8miles long and 4miles broad. It lies in the south-east of Mumbai Harbour, about 6miles miles south-east of the Carnac pier in Mumbai (Bombay).