A family values lobby group says about 150 supporters will gather in Auckland on Saturday to push anti-abortion views.
Family Life International will also debate issues like euthanasia, and call for sex education to be brought back into the home.
The group says these issues are not discussed with any depth or honesty within New Zealand culture, yet remain some of the most important issues of this era.
The conference will be attended by delegates from Britain, the United States and several Pacific Islands countries.
Family Life International says it's not connected with the lobby group Family First, although that group's leader, Bob McCoskrie, will be speaking at the conference.
The group states on its website that it is a "Catholic organisation dedicated to educating, advocating and carrying out practical work in support of life, faith and family".
It says it does this by "providing education and formation events and resources; by advocating for life, faith and family issues in the New Zealand media; and by running crisis-pregnancy centres, offering post-abortion counselling and training couples in Natural Fertility Regulation".