Research indicates a positive relationship between sharing alcohol references on social media and drinking behaviour. The current study extends that line of research by assessing the interaction of risk-related personality traits with alcohol-related social media use to examine whether social media can be used to identify individuals at risk for heavy drinking behaviour. The results of a cross-sectional survey among a sample of 638 college students (aged 18–25) indicate that the positive association between sharing alcohol references on social media and drinking intentions was strongest for individuals with low levels of sensation seeking and sensitivity topeer pressure. There was no significant interaction between sharing alcohol references and self-control. These findings indicate that the relationship between sharing alcohol references and drinking intentions is not uniform for all individuals, and that risk-related individual differences should be considered in future research and interventions.