Treasure Island is a reality competition television franchise. The programme originated in New Zealand in 1997, where it was originally produced by Touchdown Television and broadcast by TVNZ, with later editions produced for broadcasters in Australia and Ireland. In the programme, contestants are isolated on a remote Fijian island (early shows were filmed in Tonga) and compete for a cash prize of NZ$25,000. From the 2019 edition, the winner of the Celebrity Treasure Island will receive NZ$100,000 and NZ$50,000 for the regular season their chosen charity.

The Treasure Island concept was created by former Touchdown producer Darryl McEwen after searching in the local library for a story on which he could base a reality gameshow before the successful Swedish programme Expedition Robinson – the original version of the Survivor format.

Legend:

Also called Treasure Island 1, Season 1 was shot in Fiji in 1997. Levi Bowen was the season's winner with Pieta Keating coming in second.

This season consists of 5 episodes. In Episode 1, 19 people were shortlisted from 3,000 applicants. They spend a weekend doing some team activities before 12 castaways were officially cast. The remaining 7 who didn't make the cast include Nikki (37, Farmer & Mother of 4 from Temuka), Daniel (25, Lawyer from Wellington), Hugo (22, Student from Dunedin), Ana (23, Special need teacher from Rakaia), Paul (25, Internet Technologist from Auckland), Clint (19, Student from Te Kauwhata) & Anneke (21, Trainee teacher from Devonport, Auckland) who withdrew from casting and was replaced by Loretta (20, Media Studies student).

They cast flew to Nadi, Fiji, and travelled westward to an inhabited island. Castaways were divided into 2 teams of six (3 men and 3 women). North (red) Team consist of Angus (32, Insurance Loss Adjuster from North Shore Auckland), Debbie (36, Stay-at-home Mother from Whangarei), Matt (28, PhD Genetics Student from Dunedin), Pieta (22, Writer/TV presenter from Auckland), Sunny (20, Advertising Clerk from New Plymouth) and Tama (24, Webpage designer). South (Blue) Team consist of Ally (24, Account Manager from Auckland), Chris (43, IT project manager from West Auckland), Herbie (22, Youth worker from Auckland), Levi Bowen (24yo, Trainee pilot and kitchen fitter from Hamilton East), Loretta (20, Media Studies student) and Susan Hornsby (29, Lawyer from Wellington). Every five days, two people were eliminated by a test. Day 5 - Tama (North) & Susan (South). Day 10 - Matt (North) & Chris (South). Day 13 (Unschedule elimination test) - Sunny (North) & Loretta (South). Day 15 - Debbie (North) & Herbie (South). Day 20 - Angus (North) & Ally (South). Day 21 - Pieta lost the treasure hunt. Levi won $25,000.

An additional special episode Treasure Island Revisited were showcased 2 weeks after the grand finale.

A reality series in which 16 people are deposited on a Pacific Island in Tonga with four weeks to survive and find hidden treasure and hosted by previous contestant Pieta Keating. The 16 people were separated into two tribes with Tongan names based on the geographical camp base; Hahake (East) and Hihifo (West)