Registering an out-of-state order is the process of filing another state's family law order with the Arizona courts so it can be recognized and enforced in Arizona. When a family moves to Arizona with an existing court order from another state registration makes that order enforceable here.

Registration procedures vary depending on the type of order. Child support orders are registered under UIFSA. Child custody orders are registered under the UCCJEA.

Registering an out-of-state order also raises questions about whether Arizona courts can modify it. Jurisdiction to modify follows its own statutory rules.