Poor diet is one of the leading contributors to the burden of disease globally. Reducing the portion size of commonly purchased food and beverages has been identified as a promising approach for reducing obesity and related non-communicable diseases across populations. To date, there have been few public health interventions designed to address portion size. Of those that have been developed, the majority are voluntary and at the discretion of food manufacturers to implement. Future public health actions targeting portion size could include the standardisation of portions across food categories, portion size caps on unhealthy foods and restrictions to prevent the marketing of larger portion sizes as â€˜value-for-moneyâ€™.