Many single-use plastics, including some products that have been labelled as compostable, recycled, and biodegradable will be banned.
Plastic plates, bowls and trays are not banned but restricted.
The ban also covers expanded polystyrene cups and extruded polystyrene foam cups and food containers, although not polystyrene material.
Rebecca Pow, environment minister, said the government has already implemented bans on straws, stirrers and cotton buds, as well as rolling out charges for carrier bags and an industry tax on large plastic packaging imports.