Regina Anne-Marie a Greciei (greacăΆννα-Μαρία Βασίλισσα των Ελλήνων; n. 30 august1946, Copenhaga) este din 1964 soția regelui Constantin al II-lea al Greciei, care a fost detronat prin referendumurile din 1973 și 1974. Titlul ei de "Regină a Greciei" nu este recunoscut în termenii constituției republicane a Greciei. Totuși, precedentul internațional este că foștii titulari ai unor posturi continuă să dețină titlul – ca o curtoazie – tot timpul vieții.
^Article 4, Section 7 of the constitution states, "Titles of nobility or distinction are neither conferred upon nor recognized in Greek citizens." See also the full text.
^Internationally, certain former office-holders continue to be referred to using their former title as a form of personal courtesy title for their lifetime. Among those this precedent applies to are former monarchs and their spouses, former Presidents of the United States (who continue to be referred to and addressed as President) former US congressmembers and senators, and former ambassadors from certain countries. Abdicated monarchs are referred to as "ex-king" or "ex-queen" or by a subsequent title. None of the titles indicate a claim that the holder is still the actual, as opposed to one-time, holder, of a particular office.