Previous research on self-assessed intelligence (SAI) has been focused on sex differences to the exclusion of other pertinent factors, including objective and subjective social class differences. In this study, 343 participants completed an online questionnaire in which the salience of social class identity was manipulated and measures of self-assessed overall intelligence, participant sex, and objective and subjective social class status were obtained. Results showed that participants of a high social class had a significantly higher SAI when their social class identity was salient, but there was no significant difference in the SAI of low social class groups with or without their social class identity salient. Results also revealed significant sex differences in SAI, but only among participants of a high social class. Overall, these results suggest that social class salience may be an important factor in shaping SAI.