The Maraehara River is a river of the Gisborne Region in New Zealand. Rising on the eastern slopes of Mount Whakatiki in the Ruatoria Forest, the river flows eastwards. It flows into the Pacific Ocean, sharing a coastal lagoon with the larger Waiapu River.

• List of rivers of New Zealand

• "Place name detail: Maraehara River". New Zealand Gazetteer. New Zealand Geographic Board. Retrieved 12 July 2009.
• New Zealand 1:50000 Topographic Map sheet BD44 - Potara
• New Zealand 1:50000 Topographic Map sheet BD45 - East Cape

37°46′18″S 178°28′0″E / 37.77167°S 178.46667°E / -37.77167; 178.46667