The Iowa Straw Poll was a presidential straw poll and fundraising event for the Republican Party of Iowa. It was held six times, traditionally in late summer approximately six months in advance of contested presidential Iowa caucuses, from 1979 until 2011, on the campus of Iowa State University in Ames.

The Republican Party of Iowa (RPI) is the affiliate of the United States Republican Party in Iowa. The State Central Committee is chaired by Jeff Kaufmann. The RPI operates the Republican side of the Iowa caucuses and previously sponsored the Iowa Straw Poll.