The coronation of Queen Mary I of England is held at Westminster Abbey.

The coronation of Mary I as Queen of England and Ireland took place at Westminster Abbey, London, on Sunday 1 October 1553. This was the first coronation of a queen regnant in England, a female ruler in her own right. The ceremony was therefore transformed. Ritual and costume were interlinked. Contemporary records insist the proceedings were performed "according to the precedents", but mostly these were provisions made previously for queens consort.

Mary I, also known as Mary Tudor, was Queen of England and Ireland from July 1553 and Queen of Spain as the wife of King Philip II from January 1556 until her death in 1558. She made vigorous attempts to reverse the English Reformation, which had begun during the reign of her father, King Henry VIII. Her attempt to restore to the Church the property confiscated in the previous two reigns was largely thwarted by Parliament but, during her five-year reign, more than 280 religious dissenters were burned at the stake in what became known as the Marian persecutions, leading later commentators to label her "Bloody Mary".

Westminster Abbey, formally titled the Collegiate Church of Saint Peter at Westminster, is an Anglican church in the City of Westminster, London, England. Since 1066, it has been the location of the coronations of 40 English and British monarchs and a burial site for 18 English, Scottish, and British monarchs. At least 16 royal weddings have taken place at the abbey since 1100.

October 1 is the 274th day of the year in the Gregorian calendar; 91 days remain until the end of the year.