Robert Keith Rae (born August 2, 1948) is a Canadian diplomat and former politician who is the current Canadian Ambassador to the United Nations since 2020. He previously served as the 21st premier of Ontario from 1990 to 1995, leader of the Ontario New Democratic Party from 1982 to 1996, and interim leader of the Liberal Party of Canada from 2011 to 2013. Between 1978 and 2013, he was elected 11 times to federal (Broadview, Broadview-Greenwood, Toronto Centre) and provincial (York South) parliaments.
Rae was a New Democratic Party (NDP) Member of Parliament from 1978 to 1982. He then moved to provincial politics, serving as leader of the Ontario NDP from February 7, 1982, to June 22, 1996. After leading his party to victory in the 1990 provincial election he served as the 21st Premier of Ontario from October 1, 1990, to June 26, 1995, and was the first person to have led a provincial NDP government in the province of Ontario. While in office, he brought forward a number of initiatives that were unpopular with many traditional NDP supporters, such as the Social Contract. Rae's subsequent disagreement with the leftward direction of the NDP led him to resign his membership. In 2006, he joined the Liberals; he had previously been a Liberal in the late 1960s and early 1970s. In 2006, Rae was a candidate for the leadership of the Liberals, finishing in third place on the third ballot. He returned to the House of Commons of Canada on March 31, 2008, as a Liberal MP after winning a March 17, 2008 by-election, holding the riding that had previously been held by Liberal Bill Graham. He was re-elected in the 2008 general election. Rae ran again as a candidate for the party leadership but withdrew on December 12, 2008. He was re-elected in the Toronto Centre riding in the 2011 general election and was named interim leader of the Liberal Party weeks later, replacing Michael Ignatieff; he served in that position until Justin Trudeau's election as party leader in early 2013.