The New Zealand Electronic Travel Authority—also known by the acronym NZeTA—permits passport holders who are citizens of visa-waiving countries and territories to travel to New Zealand without first applying for a visa.
Applicants have to meet certain criteria if entering New Zealand by plane. An NZeTA also can apply to those who will arrive in New Zealand by cruise ship and do not have a visa.
The US is included on the visa-waiver list. If you have a valid passport issued from another country, it’s best to check the visa-waiver list to see if it’s included. The visa-waiver countries are:
Andorra, Argentina, Austria, Bahrain, Belgium, Brazil, Brunei, Bulgaria, Canada, Chile, Croatia, Cyprus, Czech Republic, Denmark, Estonia (citizens only), Finland, France, Germany, Greece, Hong Kong (residents with HKSAR or British National–Overseas passports only), Hungary, Iceland, Ireland, Israel, Italy, Japan, Korea, South, Kuwait, Latvia (citizens only), Liechtenstein, Lithuania (citizens only), Luxembourg, Macau (only if you have a Macau Special Administrative Region passport), Malaysia, Malta, Mauritius, Mexico, Monaco, Netherlands, Norway, Oman, Poland, Portugal (if you have the right to live permanently in Portugal), Qatar, Romania, San Marino, Saudi Arabia, Seychelles, Singapore, Slovak Republic, Slovenia, Spain, Sweden, Switzerland,Taiwan (if you are a permanent resident), United Arab Emirates, United Kingdom (if you are traveling on a UK or British passport that shows you have the right to reside there permanently), United States of America (including nationals), Uruguay, and Vatican City.