Justice William C. Mims became a member of the Supreme Court of Virginia in 2010.   From 1992 until 2010, he served successively as a member of the Virginia House of Delegates and State Senate, and as Chief Deputy Attorney General and Attorney General of Virginia.  

Justice Mims grew up in Harrisonburg, and was educated in the Harrisonburg public schools. He received a degree in History from the College of William and Mary, where he also did graduate work in Public Administration.  He has law degrees from George Washington University and Georgetown University. 

During his years in the General Assembly, Justice Mims worked as an attorney in Leesburg. Prior to practicing law he served as Chief of Staff to U.S. Representative Frank Wolf and as Deputy Legislative Director to Senator Paul Trible. He was a Distinguished Adjunct Professor of Law at George Mason University from 2002 through 2005.