Five studies demonstrate that feeling wronged leads to a sense of entitlement and to selfish behavior. In Study 1, participants who were instructed to recall a time when their lives were unfair were more likely to refuse to help the experimenter with a supplementary task than were participants who recalled a time when they were bored. In Study 2, the same manipulation increased intentions to engage in a number of selfish behaviors, and this effect was mediated by self-reported entitlement to obtain positive (and avoid negative) outcomes. In Study 3, participants who lost a computer game for an unfair reason (a glitch in the program) requested a more selfish money allocation for a future task than did participants who lost the game for a fair reason, and this effect was again mediated by entitlement. In Studies 4 and 5, bad luck from a fair, random system led to the same kinds of effects for men. In Study 4, students (especially men) who received bad numbers in a housing lottery expressed less intention to behave charitably. In Study 5, men who were assigned to bad outcomes by the roll of a die were less willing to help out by signing up for an additional experiment than were men in the control condition, and self-reported entitlement again mediated the effect.