| Honorific-Prefix: | The Honorable |
| Timothy G. Dugan | |
| Term Start: | December 10, 2016 |
| Term End: | November 18, 2023[1] |
| Appointer: | Scott Walker |
| Predecessor: | Patricia S. Curley |
| Successor: | Pedro Colón |
| Office1: | Judge |
| Term Start1: | 1992 |
| Term End1: | October 27, 2016 |
| Appointer1: | Tommy Thompson |
| Predecessor1: | Rudolph T. Randa |
| Successor1: | Michelle Ackerman Havas |
| Birth Date: | 9 October 1953 |
| Birth Place: | Milford, Connecticut, U.S. |
| Residence: | Shorewood, Wisconsin |
| Spouse: | Susan |
| Children: | 2 |
| Profession: | Lawyer |
Timothy G. Dugan (born October 9, 1953) is an American lawyer and jurist from Milwaukee County, Wisconsin. He served as a judge of the Wisconsin Court of Appeals in the Milwaukee-based 1st district from 2016 through 2023. Prior to his tenure on the Court of Appeals, he served for 13 years as a Wisconsin circuit court judge in Milwaukee County.
Born in Milford, Connecticut, Dugan graduated from Westminster College in pennsylvania in 1975. He then earned his Juris Doctor degree from Marquette University Law School in 1978. He resided in Shorewood, Wisconsin. In 1992, Dugan was appointed to the Wisconsin Circuit Court in Milwaukee County by Governor Tommy Thompson. He was re-elected to the Circuit Court without opposition in 1993, 1999, 2005, and 2011.[2]
During his judicial career, Judge Dugan has been President of the Milwaukee Trial Judges Association and served as the Associate Dean of the Wisconsin Judicial College. In 2008, Judge Dugan was nominated by President George W. Bush to the United States District Court for the Eastern District of Wisconsin to replace retiring Judge Rudolph T. Randa, but Judge Randa chose to rescind his resignation.[3]
In 2015, Dugan was a finalist under consideration by Governor Scott Walker for appointment to the Wisconsin Court of Appeals after Judge Rebecca Bradley's elevation to the Wisconsin Supreme Court; that seat instead went to William W. Brash III. Governor Walker ultimately appointed Judge Dugan to the Court of Appeals in October 2016 to replace retiring Judge Patricia S. Curley.[4] He was re-elected without opposition in 2018.[5]
Dugan has announced he will not run for re-election in 2024 and will leave office early in November 2023.[6]
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 7, 1992| 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| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 5, 2005| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 5, 2011
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election, April 3, 2018