Biases against advantaged groups are rarely examined in social psychology research. The different forms that this bias might take are not well-understood. In addition, predictors of biases against advantaged groups are not well-established. Across three studies, a number of different types of biases against advantaged groups were identified. In addition, beliefs about the status-legitimacy of advantaged and disadvantaged groups were associated with biases against groups. Interestingly, status-legitimizing beliefs about disadvantaged groups were more closely associated with bias than were status-legitimizing beliefs about advantaged groups. Moreover, results from these studies suggest that status-legitimizing beliefs about advantaged groups (relative to status-legitimizing beliefs about disadvantaged groups) require significant cognitive resources and are also relatively mutable and inaccessible. Results from these studies are discussed as they pertain to classic theories on intergroup relations, with an emphasis on how status-legitimizing beliefs about specific groups relate to System-Justification Theory. These studies offer insight into the understudied topic of biases against advantaged groups.