Past works have shown that identification with smokers predicts increased resistance to antismoking campaigns. In this research, we hypothesized that group entitativity, because it affects the extent to which people feel committed to act for their group, can mitigate this link. We conducted two studies with convenient samples of smokers that both included a measure of identification and measured (Study 1) or manipulated (Study 2) entitativity. Then, participants read an antismoking message and, finally, reported their attitude toward smoking (Studies 1 and 2), as well as their urge to smoke and intention to quit (Study 2). Consistently, both studies revealed more resistance among high (vs. low) identifiers, but only when they perceived smokers as a highly entitative group. These findings emphasized the importance of group processes and social identity factors for accounting for responses to antismoking information.