Cruz v. Arizona, 598 U.S. 17 (2023), was a United States Supreme Court case related to habeas corpus.

In 2003, John Montenegro Cruz shot and killed Tucson, Arizona police officer Patrick Hardesty.

In the penalty phase of the trial, Cruz was unable to inform the jury that Arizona had previously abolished parole for felons, so he would either be sentenced to life in prison without parole, or death, nullifying the state's evidence of any future danger he posed to the public.

On appeal, the Arizona Supreme Court upheld Cruz's conviction, and rejected his argument that his trial violated Simmons.

Cruz filed a petition for a writ of certiorari, asking whether Lynch applies to cases pending on collateral review.