In singular form, Queen may refer to: In government and monarchy Queen regnant, a female monarch, equivalent to the male title king; she's referred to informally in the third person as "The Queen." Today's monarchs often referred to as such include: Beatrix of the Netherlands Elizabeth II of the United Kingdom and the other Commonwealth realms Margrethe II of Denmark Queen consort, the wife of a reigning king without equal power Queen dowager, a former queen consort whose husband has died… (More on Queen)