This study aimed to identify high school student profiles of motivation for participating in extracurricular ac- tivities, predict profile membership using indicators of need satisfaction and gender, and verify whether the profiles predicted continued participation the following year. The sample included 263 Canadian students in disadvantaged high schools (54% girls, Mage = 14.54). Results revealed four profiles based on three types of motivation (intrinsic, identified, and introjected): Poorly motivated (low scores on all types), Moderately motivated (average scores on all types), Highly motivated (high scores on all types), and Autonomously motivated (high scores on intrinsic and identified, and low scores on introjected motivation). Autonomy support from the activity leader and competence predicted profile membership. The Autonomously motivated profile also predicted continued participation relative to the Poorly motivated profile. Results provide useful information for school staff about how to foster more autonomous forms of motivation for participating in extracurricular activities