Biglees Waterfall sits on the Glen Burn in Fairlie, North Ayrshire, Scotland, at roughly the 125-metre contour off a minor road about two miles south of Fairlie (OS grid ref NS 215523).

The burn descends from the Crosbie Hills between Fairlie and West Kilbride, dropping 250 metres over less than two miles, and Biglees marks the upper of two waterfalls along its short course.

The drop itself is modest, but overhanging rocks and a bubbly plunge pool create an attractive, enclosed setting. Flow can vary considerably with recent rainfall, and a reservoir just upstream adds further variability to water levels.

The fall is set within woodland and is considered the more easily reached of the two Glen Burn waterfalls.