Otterpool Quarry is a 10.2-hectare (25-acre) geological Site of Special Scientific Interest west of Hythe in Kent. It is a Geological Conservation Review site.

This quarry exposes rocks dating to the Cretaceous period, and shows the contact between the Hythe and Sandgate beds. It is very rich in fossil ammonites, with species which can be correlated elsewhere.

The site is private land with no public access. The quarry has been filled in and no geology is visible.