Shaffer and Hall (1997) have estimated college student gambling to be three times as high as their adult counterparts. Despite a considerable amount of research on gambling, researchers have struggled to develop a universal theory that explains gambling behavior. This study explored the potential of Ajzen and Fishbein's (1980) Theory of Reasoned Action to explain college student gambling. The results from 345 completed student surveys indicated both gambling attitudes and subjective norms significantly and positively predicted gambling intentions; however, the explained variance in gambling intentions was low. Gambling intentions significantly and positively predicted gambling behavior in terms of specific gambling types. Modifications to the Theory of Reasoned Action are suggested to better explain college student gambling behavior. (Contains 3 tables and 1 figure.)