| Honorific Prefix: | The Honorable |
| John E. McCormick | |
| Term Start: | August 1, 1978 |
| Term End: | July 31, 2005 |
| Predecessor: | Transitioned from 2nd Circuit |
| Successor: | Dennis R. Cimpl |
| Term Start1: | January 1, 1976 |
| Term End1: | July 31, 1978 |
| Predecessor1: | Position established |
| Successor1: | Transitioned to Milwaukee Circuit |
| Office2: | , |
| Term Start2: | 1972 |
| Term End2: | January 1, 1976 |
| Predecessor2: | John A. Fiorenza |
| Successor2: | Gary A. Gerlach |
| State3: | Wisconsin |
| State Assembly3: | Wisconsin |
| District3: | Milwaukee 17th |
| Term Start3: | January 1, 1961 |
| Term End3: | 1972 |
| Predecessor3: | Howard F. Pellant |
| Successor3: | Position abolished |
| Party: | Democratic |
| Birth Date: | 20 May 1924 |
| Birth Place: | Milwaukee, Wisconsin |
| Death Place: | Milwaukee, Wisconsin |
| Restingplace: | Calvary Cemetery Milwaukee, Wisconsin |
| Profession: | lawyer, judge |
| Spouse: | Mary Jo Deppisch |
| Children: | 9 |
| Allegiance: |  United States |
| Serviceyears: | 1942–1945 |
| Battles: | World War II |
John E. McCormick (May 20, 1924November 26, 2010) was an American Democratic politician and jurist from Wisconsin. He was a Wisconsin Circuit Court Judge for thirty years in Milwaukee County.[1]
Born in Milwaukee, Wisconsin, McCormick served in the United States Army Air Corps during World War II. He graduated from Marquette University Law School in 1951. He was elected to the Wisconsin State Assembly in 1960 and served six terms until he was appointed County Judge in Milwaukee County in 1972. He was elected to the Wisconsin Circuit Court in Milwaukee County in 1976, and was re-elected every six years until his retirement in 2004. At the time of his death, he was the longest-serving judge in Milwaukee County history.[2] [3]
Judge McCormick was married to Mary Jo Deppisch for 49 years. They had nine children. His wife preceded him in death.[1]
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 1, 1975| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 7, 1981| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 7, 1987| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 6, 1993| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 6, 1999