The Tahakopa River flows southeastward through the Catlins, an area of the southern South Island of New Zealand. Its total length is 32 kilometres (20mi), and it flows into the Pacific Ocean30 kilometres (19mi) east of Waikawa, close to the settlement of Papatowai.
The river's source is to the west of Mt Pye, 25 kilometres (16mi) east of Wyndham.
Tahakopa is a small settlement in The Catlins, an area of the southern South Island of New Zealand. It is located 25 kilometres northeast of Waikawa on the Tahakopa River. On 17 February 1915, Tahakopa became the terminus of the Catlins River Branchrailway and retained this status until the branch line was closed on 27 February 1971. From the line's opening until 12 August 1956, a railway locomotive depot was based in the village. The old station building and goods shed still stand today.