The New Zealand legal and regulatory landscape for genetically modified organisms is split between food and environmental safety. Different regulators take primary responsibility. New Zealand and Australia jointly regulate GMOs used as food primarily through the Food Standards Australia New Zealand Act. Each country has its own environmental regulator. The apex law for research and release is the Hazardous Substances and New Organisms (HSNO) Act. The New Zealand courts have confirmed that products of synthetic biology and gene/genome editing techniques are GMOs for purposes of regulation under the HSNO Act. In some parts of the country, regulation also involves local government where districts or regions have opted to regulate under the Resource Management Act. There have been calls from some sectors to revise the definitions of GMOs and approach to regulation. However, the current government has indicated that this is not a priority and that doing so would harm the agricultural sector. The law as currently framed has contributed to there being no evidence of harm to human health or the environment, and no economic losses either. However, a recent determination by the Environmental Protection Agency to allow open air use of nucleic acids on eukaryotic organisms is too fresh to speculate on future effects.