John Cyrus Shabaz[1][2] (June 25, 1931 – August 31, 2012) was an American lawyer, politician, and judge.

Earlier in his career, he represented Waukesha County in the Wisconsin State Assembly for 16 years as a Republican, serving as minority leader from 1973 to 1981.

[4][5] From 1964 to 1981, Shabaz served as a Republican state representative in the Wisconsin State Assembly, from the 83rd Assembly District, representing the Waukesha and New Berlin areas.

[6][5] On November 4, 1981, Shabaz was nominated by President Ronald Reagan to a seat on the United States District Court for the Western District of Wisconsin vacated by Judge James Edward Doyle.

[5][8][9] As of 2020, Shabaz is the last judge appointed by a Republican president to the Western District of Wisconsin.