The New Zealand Thoroughbred Breeders Stakes a Group One horse race for fillies and mares held in April each year. It is run under weight for age conditions for fillies and mares.
The first edition of the race was held at Te Aroha on 27 February 1971 when Breathalyser, a three-year-old filly by Battle-Waggon won from Ajasco and Devante. The race attained Group Two status in 1979 and was elevated to Group One in 2002. The 50th edition of the race was held in 2021.