The Mamaku Ranges are a mountain range in the North Island of New Zealand. Located to the west of Lake Rotorua and north of Lake Taupō, they lie to the immediate south of the Kaimai Range and can be thought of as an extension of it, in much the same way that the Kaimai Range can be considered an extension of the Coromandel Range. The hills terminate in the south with the valley of the Waikato River. There were at one time numerous bush railways that ran over and through the Ranges. One disused line has been developed for tourism.

At their highest, the Mamaku Ranges rise to over 600 metres (2,000 ft), and much of the high ground within the hills forms a plateau. The range is extensively forested, with the Kaimai-Mamaku State Forest and Kinleith Forest both covering a considerable part of them. The forest includes kauri trees growing at the far southern limit of their natural range. Some Kauri can be accessed via the Rapurapu Kauri Track.

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  Wairoa River near McLaren Falls drains the northern Mamaku Ranges
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  The Omanawa Falls are on the north eastern border of the Mamaku Ranges
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  View near Mamaku of more accessible eastern portion of ranges with a former disused railway line used as a tourist activity.
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  View to south from Tokoroa scenic lookout that includes in the distance to the left of the picture much of the south western Mamaku Ranges