| Official Name: | Knezha |
| Native Name: | Кнежа |
| Subdivision Type: | Country |
| Subdivision Name: | Bulgaria |
| Subdivision Type1: | Province (Oblast) |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Pushpin Map: | Bulgaria |
| Pushpin Map Caption: | Location of Knezha |
| Leader Title: | Mayor |
| Postal Code Type: | Postal Code |
| Subdivision Name1: | Pleven |
| Population Total: | 10,490 |
| Population As Of: | 2020 |
| Elevation M: | 136 |
| Postal Code: | 5835 |
| Area Code: | 09132 |
| Coordinates: | 43.5°N 29°W |
| Leader Name: | Iliycho Lachovski |
Knezha (bg|Кнежа, pronounced as /bg/) is a town in Pleven Province, Northern Bulgaria. It is the administrative center of the homonymous Knezha Municipality.
The town's name is most probably derived from the Slavic word knyaz ("prince, duke"), most likely after a local ruler that defended the population in the area during the Ottoman rule of Bulgaria. Knezha is the third-largest town in the province, after Pleven and Cherven Bryag, and is the administrative centre of a municipality. The town was located in Vratsa province until 2001, when a boundary change shifted the town into Pleven province.
A local landmark is the 17m (56feet) steel Christian cross constructed on a hill overlooking the town. The cross' construction was financed entirely by donations. It has luminescent lighting bodies attached to it and is illuminated in blue at night.[1] The cross is similar to the larger Millennium Cross above Skopje. Knezha also has a historical museum and an amateur theatre performing in the local community centre (chitalishte). The Institute on Maize of the Agricultural Academy is based in Knezha; it was founded in 1924.
Notable natives include weightlifter and Sydney 2000 Olympic gold medalist Galabin Boevski (b. 1974), Bulgaria international footballer Valentin Iliev (b. 1980), and Bulgarian Army general and long-time Chairman of the National Assembly of Bulgaria Ferdinand Kozovski (1892–1965).
Knezha has a continental climate (Dfb) with hot summers and cold winters, and relatively large temperature variations.