The Ohinemuri River is located in the northern half of New Zealand's North Island, at the base of the Coromandel Peninsula.

After 28 kilometres (17 mi), it joins the Waihou River near the town of Paeroa, 20 kilometres (12 mi) south of the Firth of Thames, into which the Waihou River empties.

[1] At Waikino the Victoria Battery site has been opened as a public reserve.

A railway line followed the river's south bank eastward to Waihi until 1952.

On 23 August 2024, the Ohinemuri River turned bright orange, with an old mining shaft eventually confirmed as the source.