Donald John Trump (/ˈdɒnəld ˈdʒɒn ˈtrʌmp/; born June 14, 1946) is an American businessman, politician, television personality, author, and the presumptive nominee of the Republican Party for President of the United States in the 2016 election. Trump is the Chairman and President of The Trump Organization, as well as the founder of the gaming and hotel enterprise Trump Entertainment Resorts (now owned by Carl Icahn).

Trump's father was New York City real estate developer Fred Trump. The younger Trump had worked for his father's firm, Elizabeth Trump & Son, while attending college. After graduating from the Wharton School of the University of Pennsylvania in 1968, he joined the company and in 1971 was given control, later renaming it The Trump Organization. He has since built casinos, golf courses, hotels, a New York City neighborhood, and other real estate properties, many of which bear his name. Many of the properties that bear his name are branding deals, where Trump either is a minority shareholder or has no ownership. Trump and his businesses, as well as his three marriages, have received prominent media exposure. He hosted The Apprentice, a popular NBC reality show, from 2004 to 2015.

Trump first campaigned for the U.S. presidency in 2000, and withdrew before any votes were cast, but afterwards won two Reform Party primaries. On June 16, 2015, he again announced his candidacy for president, as a Republican. Trump became known for his opposition to illegal immigration, his opposition to various free-trade agreements that he regards as unfair, his frequently non-interventionist views on foreign policy, and his proposal to temporarily ban foreign Muslims from entering the United States until Congress can determine how to address Islamic terrorism. Trump quickly emerged as the front-runner for the Republican nomination. His controversial remarks have inspired protests both opposing and supporting him.

On May 3, 2016, after winning the Indiana primary, Trump's main rival, Ted Cruz, suspended his campaign, and Republican chairman Reince Priebus declared Trump the party's presumptive presidential nominee. Trump's final Republican rival, John Kasich, suspended his campaign the next day. On May 26, 2016, the Associated Press announced that Trump had reached the required 1237 delegates needed in order to clinch the Republican nomination.