The Golden Jubilee of Elizabeth II was the international celebration held in 2002 marking the 50th anniversary of the accession of Queen Elizabeth II on 6 February 1952. It was intended by the Queen to be both a commemoration of her 50 years as monarch and an opportunity for her to officially and personally thank her people for their loyalty.

Elizabeth II was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until her death in 2022. She was queen regnant of 32 sovereign states over the course of her lifetime and remained the monarch of 15 realms by the time of her death. Her reign of 70 years and 214 days is the longest of any British monarch or female monarch, and the second longest verified reign of any monarch of a sovereign state in history.