Aleyan S, et al. - From the 2016 ITC Four Country Smoking and Vaping Survey, researchers collected cross-sectional data to investigate the differences in the norms regarding nicotine vaping product (NVP) use between four countries with distinct regulatory policies relating to the sale and advertising of NVPs: Australia (most restrictive), Canada (restrictive), England and the United States (least restrictive). In addition, they assessed how socio-demographics, smoking and NVP status influence these norms. The participants were 10,900 adult (age 18+) current smokers, former smokers, or at least weekly NVP users from Australia (n=1,366), Canada (n=3,309), England (n=3,835) and the United States (n=2,390). Respondents from England, Canada, and the United States more frequently reported frequent exposure to NVPs in public, having a partner who vaped, and having close friend(s) who vaped vs Australian respondents, after adjusting for relevant covariates. In addition, respondents from England more frequently reported that society and people important to them approved of NVP use vs Australian respondents. These findings suggest the possible variation in norms towards NVP use among countries with different regulatory contexts regarding sales and advertising.