This study examines how general upper secondary (GUS) students' school subjectspecific preferences, mathematical and verbal self-efficacy beliefs, and gender, relate to students' university study field interests. A cohort sample of 601 students from ten Finnish GUS schools from Oulu answered a survey inquiring students current and further study interests. To investigate underlying factors regarding GUS students' educational interests, we adapted the Social Cognitive Career Theory (SCCT) as a theoretical baseline for this study. To examine factor structures behind the interests, a series of exploratory factor analyses, linear simple regression analyses, and cluster analyses were conducted. Findings showed that subject preferences and self-efficacy beliefs can, to some extent, predict interest in science & technology, service, health & education, and economics & social sciences. However, gender was found to be an overarching predictor of study field interest. Our results emphasize the need to develop gender-sensitive guidance methods and the importance of building such cooperation between school and working life that highlights anti-stereotypical role models. We also present suggestions for future research and concrete methods that would enable students to reflect on their current educational and career choices more broadly, based on their own strengths while being more aware of the directing influence of gender on their educational and career choices.