Whangarei District Council is the latest council to ban smoking in public parks.
The council this week approved a smoke-free policy for all its sportsfields, reserves and playgrounds.
It acknowledges the policy cannot be enforced, but says the aim is to support the non-smoking public and discourage smokers.
No-smoking stickers will go up on signs at parks around the district.
More than 20 councils have adopted smoke-free policies for outdoor areas in the past five years.