| Bolshaya Pera | |
| Mouth: | Zeya |
| Mouth Coordinates: | 51.3931°N 128.2048°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 145km (90miles) |
| Basin Size: | 4400km2 |
The Bolshaya Pera (Russian: Большая Пера, also Большая Пёра Bolshaya Pyora)[1] is a river in Amur Oblast, Russia. It is a right tributary of the Zeya. It begins on the Amur–Zeya Plain northwest of the mountains it flows through the town of Shimanovsk and the Vostochny Cosmodrome. It flows into a branch of the Zeya near Svobodny. It is long, and has a drainage basin of . Its main tributaries are Dzhatva (57 km) and Malaya Pera (88 km) to the right and Ora (55 km) to the left.[2]