Corey Alan Stewart (born August 1, 1968) is an American politician and international trade attorney who served as at-large chairman of the Board of Supervisors of Prince William County, Virginia from 2006 to 2019. A member of the Republican Party, he previously served as the Occoquan district supervisor from 2003 to 2006.

Stewart was the Republican nominee for the U.S. Senate in 2018 in the Commonwealth of Virginia, losing to Democratic incumbent Tim Kaine by more than a 15-point margin. In his campaign, he had portrayed himself as an ardent supporter of President Donald Trump.

According to The New York Times, Stewart "made his name attacking illegal immigrants and embracing emblems of the Confederacy". He drew national media attention for spearheading Prince William County's 2007 crackdown on illegal immigrants.

Stewart was the Virginia state chair of Donald Trump's 2016 presidential campaign, and co-chaired the Republican Party of Virginia's "Team Virginia" field and communications campaign in 2016. In October 2016, the Trump campaign fired him after he participated in an unsanctioned protest against the Republican National Committee.

In 2017, Stewart sought the Republican nomination for Governor of Virginia, narrowly losing to Ed Gillespie. He drew media attention for his admission that his campaign staff had edited his Wikipedia page to add positive spin, his use of the term "cuckservative" in a Reddit "Ask Me Anything", and his staunch support for Confederate symbols and monuments. In January 2019, he announced that he would be retiring from politics.

Stewart was first elected chair of the Prince William County Board of Supervisors in a November 2006 special election to replace Sean Connaughton (who resigned to take a post at the United States Maritime Administration). Stewart defeated Democratic Party candidate Sharon Pandak with 53% of the vote. Stewart was elected to a full term in 2007 with 55% of the vote, reelected in 2011, and reelected to a third term in 2015 with 57% of the vote. He did not seek re-election in 2019. He was succeeded by Democrat Ann Wheeler.

After Stewart took his seat as chair in 2007, the Prince William County Board of Supervisors unanimously passed a resolution designed to purge the county of undocumented immigrants; the new law allowed the Prince William County Police Department to check the immigration status of anyone, even if they were not suspected of wrongdoing. Additionally, the board directed county staff to cut off public services to illegal immigrants, including drug counseling, elderly services, services to the homeless, and business licenses. A year later, the law was amended to require local law enforcement officers to arrest people before they could enforce federal immigration law. Stewart said in 2012 that his crackdown on illegal immigration had "cut violent crime in half", a claim PolitiFact rated "mostly false".

The county's targeting of illegal immigrants was the subject of a documentary film, 9500 Liberty (2009).