Denise Mitchell is the Gwinnett County Tax Commissioner. She was elected to this position in 2022.

Prior to serving as Tax Commissioner, Denise has experience working in the Gwinnett Tax Commissioner's Office, serving roles as an Accounting Supervisor and Manager and as Director of Finance and Accounting.

Denise holds a bachelor's degree in Hotel and Restaurant Management from Georgia State University and a Master's Degree in Public Administration from the Keller Graduate School of Management at DeVry University. She resides in Snellville, and is married to her husband, with whom they have two daughters, and two grandchildren. Their family attends Annistown Road Church in Snellville. She is a board member of the Tax Commissioners' Technology Development Council of Georgia and a member of the Georgia Tax Officials Association (GATO). She has also volunteered with the Gwinnett Tax Team's Relay for Life.