John J. Kooiker (born June 28, 1946) is an American politician affiliated with the Republican Party who served in the Iowa House of Representatives from 2015 to 2017.

[2] He attended Calvin College, graduating in 1968,[3] then Kansas State University, where he earned a masters in math education.

[7][8] Kooiker returned to the United States in 1975, and pursued Ph.D studies, later moving to rural Boyden, Iowa.

[4] Kooiker defeated Democrat John Bunstma and write-in candidate Dennis Wright, a former mayor of Hull, Iowa,[9] in the special election called on January 6, 2015, after the November 2014 death of Dwayne Alons.

[11] Kookier served on the Labor, Local Government, Public Safety, and Veteran Affairs committees and co-chaired the Transportation, Infrastructure, and Capitals Appropriations Subcommittee.