One NZ

One New Zealand Group Limited
	Logo used since 2023
Formerly	Vodafone New Zealand Ltd (1998–2023)
Company type	Subsidiary, partner market
Industry	Telecommunications, mobile, ISP
Predecessor	BellSouth NZ; Vodafone NZ
Founded	November 1998
Founder	BellSouth
Headquarters	Auckland, New Zealand
Area served	New Zealand
Products	Prepaid mobile phones; Postpaid mobile phones; GSM, UMTS (3G), 4G LTE and 5G mobile networks; Internet; Cable internet; Fixed line; Retail;
Services	Fixed telephony; Mobile telephony; Internet access; MVNO; Telecommunications;
Number of employees	>3000
Parent	Infratil (99.90%), Management team (0.10%)
Website	one.nz

One New Zealand (formerly known as Vodafone New Zealand) is a New Zealand telecommunications company. One NZ is the largest wireless carrier in New Zealand, accounting for 38% of the country's mobile share market in 2021.