|Formerly||State Insurance Cup (1998-2001); State League (2001-2009); Action Cricket Cup (2010-12). There was no naming sponsor in 2009-10, or from 2012-13 to date.|
|No. of teams||6|
|Most titles||Canterbury Magicians (8 titles, including one shared [see below])|
The National women's one-day league is the premier domestic women's one-day cricket competition in New Zealand. The competition was first competed for as the State Insurance Cup, from 1998–99, replacing the national tournament (Hallyburton Johnstone Shield). A Twenty20 competition was added in 2007-08. It is contested in a round-robin format, in which each of the six teams plays each other - once at Twenty20, then twice in one-day matches. Each team hosts two others, and one round is held at Lincoln immediately after Christmas each year, with all teams playing one day on each of the three grounds at the venue. The two teams that finish at the top of the respective tables then compete in a final to determine the champions at each format.
The five teams which competed in the inaugural season of the State Insurance Cup; Auckland Hearts, Canterbury Magicians, Central Districts Hinds, Otago Sparks and the Wellington Blaze were joined in the following 1999–2000 season by a sixth team; Northern Districts Spirit.
The inaugural State Insurance Cup was won by Canterbury, beating Auckland by 167 runs. The same two sides contested the next four finals, with Auckland winning on each occasion. The only shared title was in 2003–04, when rain prevented any play on either the original or reserve day, resulting in Canterbury and Wellington being declared joint winners. Rain also prevented play in the one-day final in 2009–10, but Central Districts were declared the competition winners as they had topped the points table in the round-robin.
|One-day competition||Twenty20 competition|
|1998-99||Canterbury Magicians||Auckland Hearts|
|1999 - 2000||Auckland Hearts||Canterbury Magicians|
|2000-01||Auckland Hearts||Canterbury Magicians|
|2001-02||Auckland Hearts||Canterbury Magicians|
|2002-03||Auckland Hearts||Canterbury Magicians|
|2003-04||Canterbury Magicians and Wellington
(final not played)
|2004-05||Canterbury Magicians||Auckland Hearts|
|2005-06||Central Districts Hinds||Canterbury Magicians|
|2006-07||Canterbury Magicians||Wellington Blaze|
|2007-08||Canterbury Magicians||Central Districts Hinds||Canterbury Magicians
(no final scheduled)
|2008-09||Canterbury Magicians||Wellington Blaze||Wellington Blaze||Canterbury Magicians|
|2009-10||Central Districts||Wellington Blaze (final not played)||Central Districts Hinds||Auckland Hearts|
|2010-11||Canterbury Magicians||Wellington Blaze||Canterbury Magicians||Wellington Blaze|
|2011-12||Auckland Hearts||Canterbury Magicians||Canterbury Magicians||Auckland Hearts|
|2012-13||Canterbury Magicians||Auckland Hearts||Wellington Blaze||Canterbury Magicians|
|2013-14||Otago Sparks||Auckland Hearts||Auckland Hearts||Canterbury Magicians|
|2014-15||Auckland Hearts||Canterbury Magicians||Wellington Blaze||Otago Sparks|
|2015-16||Auckland Hearts||Wellington Blaze||Canterbury Magicians||Central Districts Hinds|
- "Canterbury Women v Auckland Women". CricketArchive. 1999-01-23. Retrieved 2010-02-23.
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