State act, state action, or act of state may refer to:
Act of state doctrine, legal doctrine that sovereign states must respect the independence of other sovereign states State occasion Exercise of the royal prerogative was formerly called an "act of state" State action, doctrine that only state actions are subject to regulation under the US Constitution Parker immunity doctrine, legal doctrine in U.S. courts that certain acts of the U.S. state governments are immune from antitrust liability Sovereign immunity, legal doctrine that a sovereign state cannot commit a legal wrong
See also State law (disambiguation)