A Scottish statutory instrument (Scottish Gaelic: Ionnsramaid Reachdail na h-Alba; SSI) is subordinate legislation made by the Scottish Ministers or a regulatory authority in exercise of powers delegated by an Act of the Scottish Parliament. SSIs are the main form of subordinate legislation in Scotland, being used by default to exercise powers delegated to the Scottish Ministers, the Lord Advocate, the High Court of Justiciary, the Court of Session, and the Queen-in-Council.