W. Michael Gillette (born December 29, 1941) is an American attorney and retired judge in the state of Oregon.

Gillette was born on December 29, 1941, in Seattle, Washington,[1] and grew up in the Eastern Oregon city of Milton-Freewater.

[4] In 1980, he began serving on the board of directors for the Oregon Law-Related Education Project, remaining until 1988.

[4] Atiyeh appointed Gillette to fill the vacancy created when Justice Betty Roberts left the bench.

[6] Gillette wrote the majority opinion in Lehman v. Bradbury that invalidated 1992's Measure 3 that had enacted term limits in Oregon,[7] and the majority decision in Li & Kennedy vs. State of Oregon that invalidated same-sex marriages approved by Multnomah County in 2004.

[13] The Wilsonville resident returned to private practice after leaving the bench, joining Portland law firm of Schwabe, Williamson & Wyatt in January 2011.