Bradley Ryan Trost (born May 15, 1974) is a former Canadian politician who served as a Conservative Member of Parliament in the House of Commons of Canada, representing the ridings of Saskatoon—Humboldt from 2004 to 2015 and Saskatoon—University from 2015 to 2019.

In the 40th Parliament, Trost introduced private members legislation into the House of Commons that would open the Canadian uranium mining sector to increased foreign investment.

He was the third runner-up in a field of thirteen candidates, being eliminated on the tenth ballot after coming in fourth behind frontrunner Maxime Bernier, eventual winner Andrew Scheer, and Erin O'Toole, who would become leader of the party in 2020.

In 2018, Trost lost the renomination as the party candidate for his riding during the 43rd Federal election to Corey Tochor, former speaker of the Saskatchewan Legislature.

"[14] In July 2009, Trost criticized his own government's funding of Toronto Pride Week under the $100 million Marquee Tourism Events stimulus program.

"[16] During the 2011 federal election campaign, Trost made news when he spoke at a Saskatchewan Pro-life Association convention and noted to the audience that the government had not renewed funding to Planned Parenthood over the previous year and urged continued support for their defunding.

[19] Trost was one of the few MPs at the 2016 Conservative policy convention who insisted on retaining the party's definition of marriage as "the Union of one man and one woman".