The 2006 New Zealand rugby league season was the 99th season of rugby league that had been played in New Zealand. The main feature of the year was the seventh season of the Bartercard Cup competition that was run by the New Zealand Rugby League. The Auckland Lions won the Cup by defeating the Canterbury Bulls 25–18 in the grand final.

The New Zealand national rugby league team co-hosted the Tri-Nations with Australia. Three tests were played in New Zealand; with the Kiwis defeating Great Britain 18–14 in Christchurch and 34–4 in Wellington and losing to Australia 18–30 in Auckland. New Zealand lost the final, which was played in Sydney, 16–12 to Australia after Golden Point extra time. The first win against Great Britain was discounted after it was discovered that Nathan Fien was ineligible to play for New Zealand. Coached by Brian McClennan, for the Tri-Nations New Zealand included; Roy Asotasi, Adam Blair, Jason and Nathan Cayless, David Fa'alogo, Nathan Fien, Dene Halatau, Shontayne Hape, Stacey Jones, David Kidwell, Simon Mannering, Steve Matai, Frank Pritchard, Tony Puletua, Jerome Ropati, Iosia Soliola, Motu Tony, Tame Tupou, Nigel Vagana, Manu Vatuvei, Brent Webb and captain Ruben Wiki.

Earlier in the year New Zealand had lost the ANZAC Test 12-50 to Australia and lost to Great Britain 14–46 in a June Test match. Jake Webster, Paul Whatuira, Thomas Leuluai, Sonny Bill Williams, Benji Marshall and David Faiumu all appeared in the ANZAC Test but did not make the Tri-Nations squad. Lesley Vainikolo, Willie Talau, Henry Fa'afili, Ben Roberts, Alex Chan, Iafeta Paleaaesina, Ali Lauiti'iti, David Solomona, Robbie Paul, Harrison Hansen and Monty Betham all appeared in the Great Britain Test but did not make the Tri-Nations squad. Clinton Toopi and Louis Anderson appeared in both mid-season Test matches but did not make the Tri-Nations squad.

2006-10-14 20:00 NZST

New Zealand	18–30	Australia
Tries: Nigel Vagana Jerome Ropati Manu Vatuvei Goals: Stacey Jones 3/3		Tries: Karmichael Hunt 2 Mark Gasnier Mark O'Meley Greg Inglis Goals: Johnathan Thurston 5/6

Mt Smart Stadium, Auckland Attendance: 20,000 [1]

2006-10-28 20:00 NZST

New Zealand	18–14	Great Britain
Tries: Brent Webb Motu Tony Iosia Soliola Goals: Stacey Jones 3/3		Tries: Paul Wellens Gareth Ellis Goals: Sean Long 2/2 Danny McGuire 1/1

Jade Stadium, Christchurch Attendance: 17,005

This match was discounted after New Zealand were found guilty of fielding an ineligible player.

2006-11-04

New Zealand national rugby league team	34–4	New Zealand Residents

Wingham Park, Greymouth Attendance: 4000

2006-11-11 20:00 NZST

New Zealand	34–4	Great Britain
Tries: Brent Webb 2 Nigel Vagana Ruben Wiki Nathan Cayless Manu Vatuvei Goals: Stacey Jones 5/6		Tries: Gareth Ellis

Westpac Stadium, Wellington Attendance: 16,401

During the Tri-Nations the Kiwis played a New Zealand Residents side in Greymouth and defeated them 34–4. The Residents team included Corey Lawrie, Shane Beyers, David Fisi'iahi, Cliff Beverley, Julian O'Neill, Sala Fa'alogo, Cooper Vuna, George Tuakura and Wayne McDade.^[2][3] Earlier in the year the Residents had hosted a Trans Tasman Quadrangular Series, winning the final against Country 32–18.^[3][4] The Queensland Rangers, New South Wales Country and Jim Beam Cup side all came to New Zealand for the tournament. The Residents side for the tournament included Steve Buckingham, Sala Fa'alogo, Sonny Fai, Fabian Soutar and Miguel Start.^[3][5] The side was coached by David Lomax who was assisted by Sam Panapa.

Auckland hosted the 2006 Pacific Cup, which was won by Tonga. New Zealand Māori finished third.^[6] The Māori had already defeated Fiji in a January test match. Later in the season the New Zealand Māori team toured the Cook Islands, losing a three match series 2–1.^[7] The New Zealand Māori side was coached by Dean Clark and included Paul Atkins, Jeremiah Pai and Steve Skinnon. Kevin Tamati coached the team in the January match, which included Luke Goodwin.

The New Zealand Warriors competed in the National Rugby League competition. They finished 10th out of 15 teams and failed to make the playoffs.