David G. Argall, Ph.D. (born November 21, 1958) is a member of the Pennsylvania State Senate, elected in a special election on March 3, 2009 following the death of fellow Republican James J. Rhoades. He was previously a member of the Pennsylvania House of Representatives where he was first elected to the House in 1984 and served as Republican Whip from 2004 to 2008. Argall lost the 17th Congressional District election in 2010 after challenging incumbent Congressman Tim Holden.