The Thames-Coromandel District is a territorial authority district in the North Island of New Zealand, covering all the Coromandel Peninsula and extending south to Hikutaia.

It is administered by the Thames-Coromandel District Council, which has its seat in the town of Thames. It was the first district council to be formed in New Zealand, being constituted in 1975. The district lies within the Waikato Regional Council area. Its only land boundary is with Hauraki District.