Mary B. Windom was elected to the Alabama Court of Criminal Appeals in 2008, became the Court's Presiding Judge in 2012, and was re-elected to the Court in 2014. Judge Windom was born in Mobile and was raised in Bay Minette in a family dedicated to public service. Her late mother, Ina Becker, was the former Tax Assessor of Baldwin County. Her late father, Earl V. Becker, was a rural mail carrier for more than 40 years.

Judge Windom attended public schools in Bay Minette, graduating from Baldwin County High School in 1977 in the top of her class. In 1982, she earned her bachelor's degree from the University of South Alabama. Following her graduation, Judge Windom worked to help build the local economy, working for two Chambers of Commerce.

She served as Executive Director of the Bay Minette Chamber of Commerce, then as Director of Membership for the Mobile Area Chamber of Commerce. Ultimately, she decided to return to school to earn her law degree.

She graduated magna cum laude from the Thomas Goode Jones School of Law at Faulkner University in Montgomery in 1999. While in law school, she served on the Board of Editors of the Jones Law Review.

Judge Windom began her legal career in private practice and later became an Assistant United States Attorney in the Southern District of Alabama. Immediately prior to joining the Court of Criminal Appeals, she served as a Deputy Attorney General for the State of Alabama.

She is a member of the Mobile and Montgomery Bar Associations. She is admitted to practice in the United States District Court for the Southern District of Alabama, in the United States Court of Appeals for the Eleventh Circuit, and in the Supreme Court of the United States. She presently serves on the Alabama Supreme Court Advisory Committee on the Rules of Criminal Procedure.

She has also served on the Chief Justice's Commission on Professionalism and the Judicial Study Commission Sub-Committee on Indigent Defense. Additionally, Judge Windom has served as a Special Justice for the Alabama Supreme Court. Judge Windom has served the communities in which she has lived by serving on the Board of Directors of Junior Achievement of Mobile, the National Board of Distinguished Young Women, the Board of Directors of the Montgomery Humane Society, and the Board of Directors of Alabama Children First.

She is a current member of the Children's Harbor Anchor Society. She is married to Steve Windom, who served in the Alabama State Senate from 1989-98. He also served as Lieutenant Governor from 1999-2003. They have two sons, Robert and Thomas. Both are attorneys: Robert is legal counsel at Apple, Inc., in Los Angeles, and Thomas is an Assistant United States Attorney in Maryland. They have three granddaughters and one grandson. The Windoms are members of the Church of Christ.