Focusing on individual differences, we studied three influences on the accuracy of meta-perceptions of personality: (a) projection, that is, relying on one’s self-perception; (b) normative meta-insight, that is, relying on the perception of the typical person by others; and (c) distinctive meta-insight, that is, relying on others’ perception of one’s unique personality attributes. Using a round-robin design, 52 groups of four acquainted students described themselves, three acquaintances, and their meta-perceptions on the Big-Five factors of personality, and provided self-reports of psychological adjustment. Projection, normative, and distinctive meta-insight contributed uniquely to meta-perception, yet qualified by systematic individual differences: Psychologically adjusted meta-perceivers projected more and relied on distinctive meta-insight less. Moreover, acquaintance raised projection. Thus, psychologically adjusted meta-perceivers were less aware of discrepancies between their self-perceptions and their actual perceptions by others, and the better people knew another person, the more strongly they expected that this other person perceived them like they perceived themselves.