Was the first missionary out of NZ a Baptist? Depends who you count. But either way, this is an interesting short article on the recent history of the missions movements and evangelical networks in NZ.
This article, by David Jenkins, was published in 1999 by the World Evangelical Fellowship.
New Zealand is a comparatively new country in missionary terms, because we are a “young” country. The first missionary was probably Rosalie McGeorge, a single woman who went as a Baptist missionary to India in 1887.
The download section about New Zealand is part of a larger publication that can be found on the World Evangelical Alliance website.