This study investigated differences in psychological, academic, and work functioning between college students with and without asthma and identified predictors of functioning. Both participants with asthma (n = 121) and age-and gender-matched healthy control subjects (n = 121) completed measures of psychological distress, provided information on missed school and work days, and consented to have their grade point averages released from the registrar. College students with asthma also completed measures of illness uncertainty and illness intrusiveness. Participants with asthma reported greater anxiety, general psychological distress, and more missed school and work days compared to healthy control subjects. Within the asthma group, both illness uncertainty and illness intrusiveness independently predicted anxious and depressive symptoms and general psychological distress; illness intrusiveness also predicted missed school days. Although enrollment in college implies resilient functioning, college students with asthma remain at risk for problems with psychological and academic functioning.