Excellency

thumb|Their Excellencies the Lords Justices of England, for the administration of the Government during the absence of the William III of England|King by Robert White.

Excellency is an honorific style given to certain high-level officers of a sovereign state, officials of an international organization, or members of an aristocracy. Once entitled to the title "Excellency", the holder usually retains the right to that courtesy throughout their lifetime, although in some cases the title is attached to a particular office and is held only during tenure of that office.