Rainbow Springs event manager Kat Hicks said all three of the winners had bought the naming rights as Christmas gifts.
"As yet the tuatara remain un-named," she said.
"The gift recipients will get to name them when they redeem the auction prizes, which also include family passes to Rainbow Springs and a photo opportunity with the tuatara babies."
Ms Hicks said two of the auction winners were from Auckland and one was from Tauranga.
She said the team at Rainbow Springs were thrilled with the money which had been raised. It would go towards the conservation, education and captive breeding programme for tuatara at Rainbow Springs.
"The auction pages were very popular attracting over 5705 page views across the three pages as well as generating some interesting comments and name suggestions."
Some of the names suggested online included Tui and Tara, Darren and Sharon and Poo Poo and Pee Pee.
The tuatara is one of the oldest animals on the planet, and the closest living relative to the dinosaur. Native to New Zealand, they are extremely rare and hard to breed.
Ms Hicks said the 10 baby tuatara were born in April this year after a 184-day incubation period.
They were then cared for in a nursery before going on display to the public in a larger enclosure this month.