Introduction: Mattering, defined as the extent to which an individual feels they are significant and important, is associated with well-being. The university setting provides emerging adults with the opportunity to develop their identity by exploring new experiences and interests, including by participating in extracurricular activities. In this study, we investigate whether there is a positive relationship between extracurricular participation and feelings of mattering.Methods: Undergraduate students (N = 384) at Dalhousie University completed an online survey measuring extracurricular involvement (using the Dalhousie Extracurricular Involvement Survey) and feelings of mattering. Most participants were women (78%), living off-campus with roommates (45%), and in their second-year of study (36%). The Dalhousie Extracurricular Involvement Survey asked students about the types of extracurriculars they were involved in, the number of hours of participation, and words to describe how they felt when being involved. Data were analyzed with Spearman's correlations and visualized using scatterplots.Results: 59% of participants were involved in extracurricular activities, with the highest proportion of the total sample involved in academic societies (21%). The results indicated weak but significant positive correlations between total hours involved in extracurricular activities, general and interpersonal mattering, and a moderate correlation between involvement and university mattering.Discussion: These results can be used to provide valuable information that universities can use to develop initiatives that reduce stress and promote well-being on campus, and investigate whether extracurricular involvement can be used as a potential intervention to improve mattering in university students.