There are many theoretical reviews and empirical investigations about the identity determinants of stereotyping. The majority of them are connected with the classic understanding of a stereotype as a mental representation of a typical member of an out-group. The purpose of this current research was to investigate the relation between identity and readiness for conspiracy stereotyping. Two studies were conducted. The results obtained suggest that both personal and social identity might influence the subject's readiness for conspiracy stereotyping. The higher the level of personal identity formation (when SELF schemata is distinct form WE schemata) the weaker tendencies for conspiracy stereotypisation, whereas the higher the level of social identity formation (when WE schemata is distinct form OTHERS schemata) the stronger the readiness for conspiracy stereotyping. It was also observed that the categorical form of social identity is more conductive for conspiracy stereotyping than the attributional form of social identity.