- The Rangitikei River should not be confused with the Rangitaiki River in the Bay of Plenty, another of New Zealand's larger rivers, which flows through the central and northern North Island.
The Rangitikei River is one of New Zealand's longest rivers, 185 kilometers long.
Its headwaters are to the southeast of Lake Taupo in the Kaimanawa Ranges. It flows from the Central Plateau south past Taihape, Mangaweka, Hunterville, Marton, and Bulls, to the South Taranaki Bight at Tangimoana, 40 kilometres southeast of Wanganui. The river gives its name to the surrounding Rangitikei District.
In 1897 the river flooded and all six bridges over it were damaged or destroyed. The port at the mouth of the river was also washed away and never rebuilt.
The river is a popular leisure and recreation area for jetboating, white water rafting, kayaking and fishing, and includes public camp grounds along its banks, including Vinegar Hill, New Zealand. Its sheer vertical "paapa" (clay) cliffs (unique to this part of New Zealand) and deep canyons provide the perfect setting for adventure activities such as bungy jumps and flying fox rides. Gravity Canyon  on the Mokai reach is a world-famous attraction. Part of the river was used as the Anduin River in Peter Jackson's movie The Lord of the Rings: The Fellowship of the Ring.
- "Mangaweka Adventure Co, New Zealand's Family fun rafting operation". Mangaweka Adventure Co. Retrieved 30 June 2011.
- "Gravity Canyon providing the most extreme adventures in velocity. 80m bungy jump, 80m bridge swing, 160kph flying fox". Gravity Canyon. Retrieved 30 June 2011.
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