Neuseeländer (m)
/nɔɪ̯ˈzeʻlɛndɐ/
Neuseeländer is the German masculine noun for a person from New Zealand. English offers two common equivalents: the neutral New Zealander for all contexts, and the colloquial Kiwi, which is perfectly natural in everyday speech and carries no negative connotation.
1. New Zealander
The standard, register-neutral translation appropriate in all contexts, from journalism and official writing to everyday conversation.
2. Kiwi [colloquial]
Informal but widely accepted demonym for a New Zealander; extremely common in everyday English and not considered offensive.
Notes
German learners often avoid 'Kiwi' for a person because in German the word almost exclusively refers to the fruit. In English, however, 'Kiwi' as a demonym is as natural and commonplace as 'Aussie' for an Australian. Using it in informal speech sounds immediately more native.