The aim of the present study is to understand how the attitudes towards food labelling in the Chilean population have changed after the introduction of the Chilean law on food labelling and advertising. For both the unadjusted and adjusted analyses, the respondents in 2016 were more likely to be involved in a programme to lose weight and to consider food labelling the most effective intervention introduced to date to promote healthy nutrition. Evidence suggests a positive perception among Chileans regarding the effectiveness of the new law.