The Trentham Stakes is a Group 3 weight-for-age race held for thoroughbred racehorses at Trentham Racecourse near Wellington, New Zealand conducted by the Wellington Racing Club.
Held over 2100 metres in January, it is seen as the main lead-up race to the Wellington Cup, which is run the following week.
The 2021 Wellington Cup winner, Waisake, won the 2022 Trentham Stakes and was 3rd in the 2023 and 2024 editions.
The 1979 Wellington Cup winner, Big Gamble, won the 1981 Trentham Stakes.
In 1977 Show Gate won the Trentham Stakes and was second in the Wellington Cup behind Good Lord.