A smoking ban in open spaces, such as footpaths, civic squares and beaches, is to be investigated by Auckland Council.
The entire central business district could also be covered by a new bylaw.
The council's regional strategy and policy committee yesterday voted to investigate the bylaw and strengthen efforts to make smoking socially unacceptable.
The measure comes in the same week it was revealed that Auckland Council has investments in British American Tobacco. The council is reviewing the investment.
Health organisations including the Cancer Society and Hapai te Hauora addressed the committee urging it to "do the right thing" and make a "landmark policy step".