The Queen's reign has overlapped with the terms of 13 different British prime ministers. The first was Sir Winston Churchill, with whom she is pictured in 1953, just a few months before her coronation.
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FRENCH PRESIDENT CHARLES DE GAULLE
In April 1960, she attended a gala at the Royal Opera House in London alongside French President and famed general Charles De Gaulle.
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PRESIDENT JOHN F. KENNEDY
The Queen, Prince Philip, President Kennedy and First Lady Jacqueline Kennedy made a glamorous foursome during the latter couple's visit to the United Kingdom in 1961.
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PRESIDENT RICHARD M. NIXON
In 1969, Nixon was reunited with the Queen, whom he had previously met while serving as Vice President under President Dwight D. Eisenhower.
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BRITISH PRIME MINISTER MARGARET THATCHER
In 1979, Thatcher and the Queen both traveled to Zambia for the Commonwealth Conference.
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PRESIDENT RONALD REAGAN
The Queen and Prince Philip jetted across the pond to spend some time at the Reagan family ranch in Santa Barbara in March 1983.
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INDIAN PRIME MINISTER INDIRA GANDHI
On her tour of the Commonwealth in 1983, the Queen stands with Gandhi, the first female prime minister of India.
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SOVIET LEADER MIKHAIL GORBACHEV
In April 1989, just a few months before the fall of the Berlin Wall, the Queen met with Gorbachev at Windsor Castle.
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RUSSIAN PRESIDENT VLADIMIR PUTIN
Shortly after Putin made the transition from Prime Minister to President of Russia in 2000, he met with the Queen at Windsor Castle.
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PRESIDENT BILL CLINTON
The whole Clinton clan — Bill, First Lady Hillary and daughter Chelsea — chats with the Queen after tea at Buckingham Palace on a 2000 visit.
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BRITISH PRIME MINISTER TONY BLAIR
Pictured during one of her infamous "audiences" — the name the Queen gives her weekly meetings with the current Prime Minister — the Queen sits with Blair at Buckingham Palace in May 2002.
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SOUTH AFRICAN PRESIDENT NELSON MANDELA
During a visit to the United Kingdom in 2003, Mandela shook hands with the Queen during a Buckingham Palace reception.
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PRESIDENT GEORGE W. BUSH
The Queen shares a laugh with Bush and Prince Philip during a July 2001 visit to the U.K.
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FRENCH PRESIDENT NICOLAS SARKOZY AND U.S. SECRETARY OF STATE HILLARY CLINTON
During the 2009 G20 Summit in London, the Queen chats with Clinton and Sarkozy during a reception at Buckingham Palace.
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GERMAN CHANCELLOR ANGELA MERKEL
Arriving in Berlin in June 2015, Queen Elizabeth shakes hands with Merkel.
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PRESIDENT BARACK OBAMA
In the final year of his presidency, Obama and his wife, First Lady Michelle Obama, met with the Queen and Prince Philip at Windsor Castle before sitting down to a private lunch.
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BRITISH PRIME MINISTER THERESA MAY
In this June 2016 photo, May is visiting Buckingham Palace to formally become the head of the government.