Helir-Valdor Seeder (born 7 September 1964) is an Estonian politician. He is a member of the parliament, former chairman of the Isamaa and served as Minister of Agriculture from 2007 to 2014. Seeder has a master's degree in economics from the Estonian University of Life Sciences.
On 13 May 2017 Seeder was elected the chairman of the Pro Patria and Res Publica Union (later renamed Isamaa).