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Ashley Mayes Guice earned a bachelor's in legal studies from Tulane University and a law degree from Louisiana State University. She is married and a mother of two.

Ashley is a judge at Harris County Criminal Court at Law #3. She has held that position since January 2022. She previously worked at the Harris County Public Defender’s Office as an Assistant Public Defender in its Felony Trial Division, at the Harris County District Attorney’s Office as an Assistant District Attorney prosecuting misdemeanors and serving in various specialty court assignments, and in private practice doing criminal defense work after graduating from law school in 2011.

Ashley Mayes Guice for County Criminal Court No. 16 (Editorial)

Ashley previously worked at the Harris County Public Defender’s Office as an Assistant Public Defender in its Felony Trial Division, at the Harris County District Attorney’s Office as an Assistant District Attorney prosecuting misdemeanors and serving in various specialty court assignments, and in private practice doing criminal defense work after graduating from law school in 2011.

Ashley has been a judge at Harris County Criminal Court at Law #3 since January 2022.

Judicial Candidate Resource Guide

As a criminal county court judge, she oversaw cases involving minor criminal offenses and the administration of county government, and exercised authority to review and correct the rulings of lower courts.

As the current Staff Attorney for the Harris County Court, she provides legal assistance to 20 criminal and civil judges, organizes judicial education/training sessions, advises them on ethical matters, and ensures that they stay apprised of legislative updates.

As a senior prosecutor, she assisted in criminal investigations for serious felony cases.

- As a criminal county court judge, she oversaw cases involving minor criminal offenses and the administration of county government, and exercised authority to review and correct the rulings of lower courts.
- As the current Staff Attorney for the Harris County Court, she provides legal assistance to 20 criminal and civil judges, organizes judicial education/training sessions, advises them on ethical matters, and ensures that they stay apprised of legislative updates.
- As a senior prosecutor, she assisted in criminal investigations for serious felony cases.

Legal Experience

Seeks to establish transparency through community education and outreach.

- Wants an efficient resolution of cases.
- Seeks to establish transparency through community education and outreach.

Judicial Administration

Committed to ensuring equal justice for all.

- Committed to ensuring equal justice for all.

Judicial Philosophy

As of January 22, 2026, Ashley Mayes Guice’s website did not contain information on this issue.

Ethics & Conduct

Community Involvement

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Ashley Mayes Guice

Ashley Mayes Guice currently serves as judge of the Harris County Criminal Court at Law No. 12. She was appointed in June 2025 and is serving her first term. She ran for judge of the Harris County Criminal Court at Law No. 16 in 2024 but did not win.

Life at the Harris County Criminal Justice Center

Ashley Guice - Ballotpedia

Ashley Mayes Guice is from Harris County, Texas. She has a bachelor 27s degree from Tulane University. She is married to her husband, Jonathan Guice, and they have two children together.

Ashley is a judge for Harris County Criminal Court at Law #3. She previously served as an assistant district attorney with the Harris County District Attorney's Office and as an assistant public defender with the Harris County Public Defender's Office. 

Ashley is currently a judge of the Harris County Criminal Court at Law No. 12. She was appointed to this position in June 2025. She ran for election to the Harris County Criminal Court at Law No. 16 in 2024 but did not win.

Ashley Mayes Guice is from Harris County, Texas. She has a bachelor 27s degree from Tulane University and a law degree from Louisiana State University. She is married to her husband, Jonathan Guice, and they have two children together.

Ashley is a judge for Harris County Criminal Court at Law #3. She previously worked as an assistant public defender in the felony trial division of the Harris County Public Defender's Office and as an assistant district attorney with the Harris County District Attorney's Office. Before attending law school, she worked in corporate America. 

Ashley is currently a judge of the Harris County Criminal Court at Law No. 12. She was appointed to this position in June 2025. Ashley ran for election to the Harris County Criminal Court at Law No. 16 in 2024 but did not win.

Ashley is a judge. She works at Harris County Criminal Court at Law #3, where she has been since January 2022. She previously worked at the Harris County District Attorney’s Office as an Assistant District Attorney, at the Harris County Public Defender’s Office as an Assistant Public Defender, and in private practice doing criminal defense work.

Ashley Mayes Guice is currently Judge of the Harris County Criminal Court at Law No. 12. She was appointed in 2025 to fill a vacancy and is serving her first term. She previously ran for judge of the Harris County Criminal Court at Law No. 16 in 2024 and did not win.