Glen Falls is a small waterfall located on Ellicott Creek in the village of Williamsville, New York.

The hydropower provided by the falls made it an ideal site for a number of early watermills used to grind grist and to power sawmills.

[1] One of the earliest settlers of what is now Williamsville, Jonas Williams, owned two mills on opposite sides of Ellicott Creek.

[2] The vertical drop is part of the Onondaga Escarpment, a portion of which runs through Williamsville.

Today, the falls forms part of the eastern border of Glen Park.