Don’t face criminal charges alone.

When criminal charges threaten your future, San Mateo County's trusted defense begins with Attorney Tennille Duffy.

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When you or a loved one is facing criminal charges, having the right attorney matters. Attorney Tennille Duffy provides dedicated legal representation to help you navigate the process and protect your future. Contact her today for a confidential consultation.

Specialist criminal defense

DUI Charges

Did you know that you only have 10 days to preserve your right to drive with the DMV while charges are pending?

DUIs are some of the most confusing cases to deal with - and we can represent you in court and handle the DMV, helping to maintain your driving privileges while you fight your case. I will challenge the evidence, fight for a dismissal or reduced penalties, while guiding you through every step of the
process.

Theft & Embezzlement Charges

The consequences of these allegations can be serious - from fines and restitution to jail time and a permanent record.

Let my experience protect you and your future. I will scrutinize evidence, negotiate with prosecutors where necessary, and work with you - whether you want to apply for diversion, or build a strategic defense for trial.

Unlawful Stop & Search:
Protect your rights

You should never accept police statements and the prosecution’s case at face value. The only way to protect your constitutional rights is to have an attorney who is experienced in challenging illegal police actions and getting cases dismissed.

I believe in holding law enforcement accountable, and will carefully review your case to fight unlawful stops and searches in court.

Assault & Domestic Violence

Domestic violence and assault allegations need immediate attention and a strong defense. I listen to what you want, and what you believe is in the best interests of you and your family.

Don’t wait until your first court date to start thinking about your defense. I know how these cases are prosecuted, and how to protect you and fight for the best possible outcome.

Book your free consult

What clients are saying:

  • I can't give Tennille any higher recommendation. I had worked with a previous attorney in my felony case who did little to progress things for 18 months. Within 6 months of engaging Tennille, she had managed to push the DA to offer a dismissal.

    SG - March 2025

  • We hired Tennille for a criminal case involving our son. She told us exactly what she can do, and got us what she promised. She is professional and knows the law. I wouldn't hesitate to hire her again.

    Jason H. - August 2024

  • When I say that she's worth every penny I mean it. After 3 years of fighting a case in Santa Clara County, Tennille got us the best results we could have hoped for. The hard work and dedication you expect and absolutely need from an attorney she provides, and goes above and beyond. She is a strong intelligent woman, who is honest and trustworthy, I am forever grateful for her. If I ever need any help in the future I'm using her and recommending her to everybody I know.

    Rayna M. - June 2024

  • In the courtroom, Tennille is a force to be reckoned with. Her confidence, preparation, and ability to think on her feet were evident in every hearing. It was clear she had done her homework, and her arguments were compelling and persuasive. Thanks to Tennille, I can move forward with my life.

    Ethan H. - August 2024

  • Tennille Duffy was amazing! Looking at losing my license for a year, but her knowledge of DUI law was second to none, and got my license back! I can't say thanks enough.

    John M. - 2020

  • I got into some trouble and she successfully had my charges dropped. I was pretty scared and nervous about my situation but she helped me feel comfortable at every step of the way. I recommend Tennille Duffy to represent anybody any day of the week.

    Armando A. - 2023

  • Great lawyer, very easy to work with and really knows her stuff, super knowledgeable, and really handled my case professionally and helped get a GREAT outcome!! They made a stressful situation a lot easier. Highly recommend.

    Oliver M. - January 2026

  • Tennille Duffy is the best criminal and DUI defense attorney you are going to find in San Mateo County, including Redwood City and South San Francisco. She is honest, caring, and a FIGHTER. You want an attorney who will fight, it's her. She is truly caring and the best. Call her, trust me, you won't regret it.

    Ghazal S. - August 2024

  • Ms. Tennille Duffy is the best public defender. She fought hard to help my DUI case, and was able to get it dismissed. She's very knowledgeable and easy to talk to, which made a stressful situation a lot easier to deal with. I'm really grateful for her help and would definitely recommend her. Thank you Ms. Duffy.

    GK. - March 2026

Schedule a complimentary consultation

Schedule a free consultation with Attorney Tennille Duffy to explore your options and receive guidance tailored to your specific needs. Book an appointment today to ensure your rights are protected and your interests expertly represented.

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Attorney Profile:
Tennille Duffy

With over a decade of criminal defense experience in San Mateo and the Bay Area, Tennille Duffy brings a unique professional background to your case. Tennille has worked for a Supreme Court judge in Sydney, practiced criminal defense in Australia, worked on law reform in East Africa, and helped to expand access to legal education and to write the first Bar Exam administered in India. Since 2013 she has made the Bay Area her home and dedicates her career to criminal defense.

As your attorney, she brings a unique perspective to each case, and knows that facing a criminal case can change your life. She meticulously examines police and prosecution actions from every angle to protect your rights and secure the best possible outcome.

When you're facing criminal charges in the Bay Area, you need more than just legal representation—you need an advocate who understands what you're going through. You want someone who will go the extra mile to secure your freedom, takes the time to build trust and understand what you need, and fight for the best result.

For Tennille, this work is not just about resolving cases, it is about helping clients understand their rights and options and helping them through an intimidating and confusing process. Whether you are facing a misdemeanor or a felony, whether you want to explore diversion, fight an illegal search, or go to trial, Ms. Duffy works collaboratively with her clients every step of the way.

Clients consistently express confidence in Attorney Duffy's defense strategies and her unwavering commitment to their cases. She approaches each matter with the well-developed instincts of a seasoned defense attorney, combined with personalized attention as someone who truly cares.

Don't face the California criminal justice system alone. Contact the Law Office of Tennille Duffy today for a confidential consultation about your criminal defense case.

Contact Ms. Duffy