McLaren Falls is a seven-metre waterfall on the Opuiaki River in New Zealand's North Island. The river originates on the Mamaku Plateau and flows north to meet the Wairoa River, with McLaren Falls marking the point where serious whitewater begins.

Rated Grade VI, the falls are generally considered too dangerous to paddle. Just upstream, a one-metre drop known as "Humpty Dumpty" is a popular warm-up for kayakers before they encounter the river's more challenging rapids below.