| Bear Creek | |
| Map: | SAR Map.jpg |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | California |
| Subdivision Type3: | Counties |
| Subdivision Name3: | San Bernardino |
| Length: | 17miles |
| Discharge1 Location: | Santa Ana River, Seven Oaks Reservoir |
| Source1: | Baldwin Lake area |
| Source1 Location: | San Bernardino Mountains, San Bernardino National Forest |
| Source1 Coordinates: | 34.2739°N -116.8086°W |
| Mouth: | Santa Ana River |
| Mouth Location: | Seven Oaks Reservoir |
| Mouth Coordinates: | 34.1603°N -117.015°W |
| Mouth Elevation: | 2605feet |
| Tributaries Left: | Siberia Creek |
Bear Creek is an approximately 17miles tributary of the Santa Ana River in the San Bernardino Mountains of the U.S. state of California.
The course of Bear Creek is entirely contained within San Bernardino County, and primarily within the San Bernardino National Forest.
It rises near the community of Woodlands, and flows north into Baldwin Lake in the eastern . From there it flows west past the town of town of Big Bear City and the city of Big Bear Lake into Bear Valley, where since 1912 it has been impounded by a dam to form Big Bear Lake reservoir.
Downstream of the dam it receives Siberia Creek from the left, and plunges suddenly into a steep and narrow canyon, and empties into the Santa Ana River just upstream of Seven Oaks Dam, which in wet years, impounds water on the Santa Ana River past the Bear Creek confluence.