The nightmare prevalence literature to date has largely focused on nightmare episode severity (i.e. frequency), with 8%-87% of individuals reporting these events in the past week to year. While this has helped to determine the prevalence of these events, focus on the episode severity alone is problematic because it means little is known about the actual prevalence of nightmare disorder. Moreover, focus on episode severity likely overestimates the actual prevalence of clinically significant nightmares while also obscuring clinically significant consequences of the disorder. Understanding the prevalence of nightmare disorder can help guide treatment planning and interventions. The present study recruited UNT undergraduates (N = 372; 351 analyzed) and managed all participant data using Research Electronic Data Capture (REDCap). The present study aimed to determine the prevalence of nightmare disorder, as stated in the DSM-5, to facilitate accurate characterization of the disorder. Additionally, as part of the secondary aim the influence of gender on nightmare disorder status and psychological wellbeing as measured by psychological and sleep outcome variables was examined. Finally, comparisons of individuals with DSM-5-defined nightmare disorder to those without the disorder were conducted on previously examined correlates (e.g., trauma symptoms, depression).