Consumer NZ is an independent, non-profit consumer advocacy organisation in New Zealand, established in 1959. It conducts independent research, uses insights from market research for investigations and tests product to inform and advocate for greater consumer protections.  

It is well known for its magazine, Consumer, which is published quarterly. Consumer NZ was a finalist in the 2025 Voyager Media Awards for Best News, Current Affairs or Specialist Publication.

The Consumers' Council was established in 1959, to protect and promote the interests of consumers. In 1963, it was renamed the Consumers' Institute and, in 1967, became a separate government-funded entity. Following the establishment of the Ministry of Consumer Affairs in 1986, the institute lost its special legal protection and government funding. In 1989, it became an incorporated society funded by member subscriptions, and in 2007, it was renamed Consumer NZ.

'Consumer NZ manages Powerswitch, which is a website that helps consumers compare power plans and check they're on the best plan to meet their needs.

Consumer NZ is primarily funded by memberships. It also acquires funding through research partnerships and its business license programmes, such as the People’s Choice award and the Consumer Trusted programme.

Consumer NZ conducts extensive research to gauge public sentiment and inform its advocacy work. The organisation's quarterly Sentiment Tracker surveys 1,000 New Zealanders to identify and monitor top consumer concerns, such as the cost of living, healthcare and climate change.

The organization also surveys New Zealanders to assess their satisfaction in areas such as insurance, banking, Kiwisaver and energy retailers.

Consumer NZ campaigns on issues affecting people in New Zealand. Efforts focused on since 2020 include: