Résumé : We examined how individuals who may be labelled ‘conspiracy theorists’ respond to discrimination against ‘conspiracy theorists’. In line with the Rejection-Identification Model (Journal of Personality and Social Psychology, 77, 135, 1999), we hypothesized that perceived group-based discrimination against conspiracy theorists would strengthen identification with the ‘conspiracy theorist’ ingroup. We propose that this relationship might be mediated by meta-conspiracy beliefs, that is, the belief that the discrimination of conspiracy theorists is itself a conspiracy. Three studies (Ns = 97, 364, 747) among participants who had been labelled as ‘conspiracy theorist’ in the past (Studies 1 and 2) or who had been labelled as such at the beginning of the experiment (Study 3) revealed robust positive relationships between perceived discrimination of conspiracy theorists, meta conspiracy beliefs, and identification. Furthermore, in Studies 2 and 3, identification was strongly associated with positive intergroup differentiation and pride to be a conspiracy theorist. However, there was no evidence that a manipulation of discrimination with bogus public opinion polls affected ‘conspiracy theorist’ identification or meta-conspiracy beliefs. A Bayesian internal meta-analysis of the studies returned moderate (for group identification) to strong (for meta-conspiracy beliefs) support for the null hypothesis. In contrast, in Study 3, a manipulation of discrimination by powerholders enhanced both identification and meta-conspiracy beliefs. This suggests that the source of discrimination moderates the causal relationship between perceived discrimination of conspiracy theorists and group identification.