We provide the first evidence of the impact of 9/11 on outcomes for Muslims in the US criminal justice system. We focus on parole outcomes of Muslim men in the state of Georgia, and find that 9/11 led to large declines in the likelihood of being granted parole and a subsequent 23% relative increase in prison time for Muslim inmates. We find that these impacts persisted after 9/11 with similar sized magnitudes. We also examine heterogeneity in the effects by recidivism risk and find suggestive evidence that the effects were larger for higher risk inmates.