We investigated the frequency and types of electronic partner aggression (EPA) victimization and its relation to offline partner aggression (PA) and psychological functioning. The sample was comprised of 200 predominantly White (73.5%) Canadian university students (83.5% women; 18–23 years of age) with dating experience. EPA occurred in 67.5% (verbal) to 86.5% (coercive control) of the sample. EPA and offline PA victimization were positively associated (ps < .05) and frequently co-occurred. Higher levels of PA were generally associated with higher levels of internalizing, externalizing, and total problems, with offline sexual aggression and coercive control EPA subtypes being most predictive of poor psychological functioning (ps < .05). Findings indicate that many emerging adults use communication technology to aggress against their romantic partners, that such aggression appears to be part of a larger pattern of PA and is most deleterious when coercive control is present, and that assessment of and prevention and intervention initiatives for PA need to consider both electronic and offline aggression.