Brandon McDonald Williams (born May 22, 1967) is an American politician, farmer, and businessman who was the representative for New York's 22nd congressional district from 2023 to 2025.

[1] On January 16, 2025, President-elect Donald Trump named Williams the next under secretary for Nuclear Security, pending Senate confirmation.

[7] After leaving the U.S. Navy as a lieutenant in 1996, he studied at the Wharton School of the University of Pennsylvania, earning an MBA in 1998.

Williams' home in Sennett lay in the 24th, two miles outside of the border of the 22nd; he chose to run in the 22nd, in part, to avoid a primary against Tenney.

[12] Williams had begun thinking about running for office during the COVID-19 pandemic, and began his campaign after Katko announced his retirement.

[15] Campaign ads by the Republican Congressional Leadership Fund during the primary criticized Williams for living on a truffle farm, using the expensive gourmet ingredient to portray him as an out-of-touch elitist.

Williams said that Conole's 20-year military career left him ill-equipped to handle issues of the economy and private business.

[30] At a 2023 Christmas party in Washington, a verbal confrontation between Williams and Michael Gordon, his former chief of staff and campaign manager, was recorded by Ryan Sweeney, another former staffer.

[4] His campaign statements expressed support for voter identification requirements, and for building a Mexico–United States border wall.

[37][34] He compared the January 6th hearings to the Moscow trials,[10] and denounced Trump's indictment by a Manhattan grand jury in March 2023.

"[13] He opposes abortion and believes it should be banned with exceptions in the case of rape, incest or to save the life of the mother.

[39][40] Williams said he would oppose any effort in Congress to restrict or remove access to firearms, including red flag laws and bans of assault weapons and high-capacity magazines.

[13] Williams met his wife, Stephanie, at a Bible study group in Orlando, Florida, while in the U.S. Navy.

[41] After the George Floyd protests of 2020, Don Williams and other members of the Dallas business elite developed an eight-point action plan that included raising the minimum wage, banning police use of chokeholds, and expanding Medicaid in Texas.