| Site of Special Scientific Interest | |
 A stream at Lower Bostraze | |
  Location within Cornwall  Lower Bostraze and Leswidden SSSI (England) | |
| Location | Cornwall |
|---|---|
| Grid reference | SW385315 |
| Coordinates | 50°07′34″N 5°39′39″W / 50.1262°N 5.6608°W |
| Interest | Biological |
| Area | 2.3 hectares (0.0230 km2; 0.00888 sq mi) |
| Notification | 1996 |
| Natural England website | |
Lower Bostraze And Leswidden SSSI is a biological Site of Special Scientific Interest, located on the Penwith Peninsula, Cornwall, England, a little to the east of St Just, approximately 8 km west of Penzance.