Stanley Force is a waterfall on Birker Beck in Cumberland, England, located in the Lake District. The falls are reached via a woodland path that follows the beck upstream, crossing a large flat stone that forms a natural bridge over the water.

The route to the upper falls involves stone steps — which can become extremely slippery after rain — leading to a viewing platform overlooking the upper cascade.

A second path that once allowed access to the base of the waterfall has at times been closed to visitors.