Background: This research aims to investigate the prevalence of fast food consumption among medical students at the University of Cyberjaya and identify socio-demographic factors influencing their dietary choices. Methods: A cross-sectional study was conducted, involving 500 medical students. A structured questionnaire was used to collect data on socio-demographic characteristics, fast food consumption patterns, personal preferences, and access to fast food outlets. Results: Age and gender were not significant predictors of fast food consumption. However, family income, pocket money, personal preferences, and proximity to fast food outlets showed a significant association with fast food consumption. Students with higher family incomes and pocket money, along with a liking for fast food and easy access to fast food outlets, were more likely to consume fast food regularly. Conclusion: The study highlights the importance of socio-demographic factors and environmental influences in determining fast food consumption among medical students. Health promotion efforts should target these factors to encourage healthier dietary habits among university populations.