The 2005 New Zealand rugby league season was the 98th season of rugby league that had been played in New Zealand. The main feature of the year was the sixth season of the Bartercard Cup competition that was run by the New Zealand Rugby League. The Mt Albert Lions won the Cup by defeating the Canterbury Bulls 24-22 in the Grand Final.
The New Zealand Kiwis played Australia at Auckland's Ericsson Stadium as part of the Tri-Nations. New Zealand lost this match 26-28 but went on to win the tournament, defeating Australia 24-0 in the final at Elland Road. Earlier in the year New Zealand had lost the ANZAC Test, 16-32. Coached by Brian McClennan, for the Tri-Nations New Zealand included; Louis Anderson, Roy Asotasi, Nathan Cayless, David Faiumu, Awen Guttenbeil, Shontayne Hape, Lance Hohaia, Stacey Jones, David Kidwell, Ali Lauiti'iti, Iafeta Paleaaesina, Frank Pritchard, Tony Puletua, Paul Rauhihi, David Solomona, Motu Tony, Clinton Toopi, Nigel Vagana, Manu Vatuvei, Brent Webb, Jake Webster, Paul Whatuira, Bronson Harrison and captain . Jerome Ropati, Matt Utai, Benji Marshall, Thomas Leuluai, Wairangi Koopu, Dene Halatau and Jamahl Lolesi played in the ANZAC Test but did not tour. Daniel Anderson coached the Kiwis in the ANZAC Test before resigning in June and being replaced by McClennan.