Brian John Roehrkasse (born September 21, 1973), is formerly the spokesman for the United States Justice Department under the administration of George W. Bush.

Brian J. Roehrkasse is from Urbandale, Iowa. Roehrkasse was on the campaign staff for George W. Bush in 2000. From 2001-2002, Roehrkasse served in the Office of Public Affairs at the Department of Transportation. In 2002, he moved to the then newly created Department of Homeland Security where he served as press secretary until 2005. Roehrkasse then became the deputy director of public affairs at the Department of Justice in 2005 and director of public affairs in 2007. Prior to working in Washington, he lived in San Diego and worked in the San Diego office of Porter Novelli.

He graduated from Colorado State University in 1996 with a bachelor's degree in journalism.