Queen's Official Birthday is celebrated as a public holiday in 53 Commonwealth countries. The exact date of the queen's birthday celebration varies from country to country.

The countries that celebrate the queen's birthday are Australia, Bermuda, Falkland Islands, Gibraltar, Montserrat, New Zealand, Niue, Papua New Guinea, Pitcairn Islands, Saint Helena, Saint Martin, Solomon Islands, Turks and Caicos Islands, Tuvalu.