Sourmilk Gill Falls is a series of waterfalls cascading along Sourmilk Gill in Easedale, near Grasmere in the Lake District, Cumbria.

The falls stretch across roughly one kilometre of the gill as it descends from Easedale Tarn, reaching an elevation of around 180 metres. Individual drops reach approximately 20 feet, and the multiple cascades can be viewed from both sides of the valley.

The falls are accessed via the popular path from Grasmere up to Easedale Tarn, with a footbridge allowing walkers to cross and view the gill from different angles.

The lower falls in particular draw visitors who often linger to find the best vantage points along the rocky streamside. The gill runs most impressively after wet weather, when it fills dramatically and the cascades become especially striking.