Otamarakau (Māori: Ōtamarākau) is a beach and community in the Western Bay of Plenty District and Bay of Plenty Region of New Zealand's North Island, just south of Pukehina.

The New Zealand Ministry for Culture and Heritage gives a translation of "place of young warriors" for Ōtamarākau.

In 2018, stormwater laden with sediment flowed over the Otamarakau wetlands from two ponds constructed without sufficient planning approval. In January 2020, kiwifruit company Bay Gold was fined over the incident.

A speed camera was installed on the highway through Otamarakau in 2018, leading to $30,000 of fines in its first month of operation.

Ōtamarākau Marae and its Waitahanui a Hei meeting house are a traditional meeting place for the people of Ngāti Mākino. The modern waterfront wharekai designed by Aladina Harunani has accommodation and a full commercial kitchen. They host corporate meetings, Annual General Meetings, Special General Meetings, Wananga, family reunions, noho marae, weddings, birthdays, camps, schools and more for local, national and international visitors.

Otamarakau School is a co-educational state primary school for year 1 to 8 students, with a roll of 88 as of August 2024.

The school's main annual fundraising event is a surf fishing competition.

37°50′04″S 176°36′30″E / 37.834566°S 176.608293°E / -37.834566; 176.608293