• Walnut Creek Attorneys
    Serving the Greater Bay Area
    Former Prosecutors and Superior Court Judge

O’Connor, Runckel & O’Malley LLP is a law firm serving Walnut Creek, Contra Costa County, and the greater San Francisco Bay Area. Our attorneys represent clients in a wide array of serious personal injury and criminal matters.

Trial Experience

The partners at O'Connor, Runckel & O'Malley have more than 90 years of experience in the courtroom. As former Contra Costa County prosecutors, Tom O'Connor, Jason Runckel and Dan O'Malley have tried over 250 jury trials. That courtroom experience gives us a unique advantage over the average attorney. Our courtroom skills not only come into play if your case goes to trial, but our reputation in the courtroom allows us to negotiate better settlements for our clients in the cases that don't go to trial. View Recent Verdicts and Settlements

As a retired Contra Costa County Superior Court Judge, Dan O'Malley gives our clients the truly rare advantage of a former Judge working on their cases. He has tried cases as an attorney and presided over them as a Judge. His relationships with District Attorneys and Judges in the Bay Area are second to none. He knows how to control the courtroom, and employs knowledge from both sides of the bench as a trial attorney on your behalf.

Free Consultation

When you contact O'Connor, Runckel & O'Malley for a free consultation, you will gain all the advantages of our attorneys' experience and knowledge. We won't be satisfied until you have enough information to be comfortable with your situation.

Whether you need a Walnut Creek Personal Injury Lawyer, DUI Lawyer, or Criminal Lawyer, we will handle your case from the initial consultation until the case is closed. If you have a legal question, or have been injured by someone else's negligence, call us or submit one of the contact forms on the website to schedule a time to speak with one of our attorneys.

Call: (925) 939-5600

Personal Injury Attorney

The goal of O’Connor, Runckel & O’Malley LLP is to bring justice to those harmed by the wrongdoing of others. We do this by seeking full compensation for their losses. Our personal injury attorneys handle a variety of cases including:

  • Traumatic Brain Injury
  • Wrongful Death
  • Car Accidents
  • Pedestrian Accidents
  • Bicycle Accidents
  • Dog Bites

If you or a loved one has been harmed due to another’s negligence and are seeking legal advice, contact us now for a free attorney consultation.

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Criminal Defense Attorney

Former Prosecutors and a Superior Court Judge

Our experience prosecuting criminal cases, as well as adjudicating them from the bench provides us with the unique insights necessary to provide you with the best possible defense.

We handle a variety of criminal defense cases including:

  • DMV Hearings
  • License Suspension
  • Juvenile Offenses
  • Drug Possession & Sales
  • Theft Crimes
  • White Collar Crimes
  • Murder & Manslaughter
  • Domestic Violence

Contact us for a free attorney consultation. You will be gaining the expertise of former prosecutors and a superior court judge on your side.

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DUI Defense Attorney

The attorneys at O'Connor, Runckel & O'Malley defend clients accused of Driving Under the Influence (DUI). Whether it is a first time DUI charge or a vehicular manslaughter charge involving alcohol, we have the experience necessary to defend your rights.

  • What to do after a DUI Arrest
  • DUI Legal Process
  • Choosing a DUI Lawyer
  • First Time Offense
  • Second Offense
  • Third Offense
  • Felony Offense

You have 10 days after your arrest to formally request a DMV hearing and avoid license suspension. Don’t delay.

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Great Lawyer

5 Star Rating
As Seen On AVVO

Posted by a client 

I had an excellent experience with Tom O'Connor, he is a very professional lawyer, his staff is courteous and helpful and he is easy to keep in touch, he gives you an accurate estimate of your case and your chances of success. He is a very forthright and honest attorney. You cannot do better than him.

Excellent Service, Personal attention


Learn how the law office of O’Connor, Runckel and O’Malley can help you by watching this short video.

O'Connor, Runckel & O'Mally LLP

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We serve clients throughout the San Francisco Bay Area including San Francisco, Contra Costa, Oakland, Alameda, Walnut Creek, Concord, Pittsburg, Antioch, Brentwood, Danville, Richmond, Martinez, Orinda, Lafayette, Oakley, Pinole, San Pablo, Clayton, Benicia, San Ramon, Vallejo, Santa Rosa, Fremont, Hayward, Pleasanton, San Mateo, Daly City, Oakland, Richmond, Pacifica, Petaluma, Rohnert Park, Redwood City, San Anselmo, San Bruno, San Carlos Napa, Sonoma, Vacaville, Fairfield, Pleasant Hill, Moraga, Clayton, Albany, American Canyon, El Cerrito, Dublin, Livermore, San Leandro, San Rafael, Santa Clara, Sausalito, South San Francisco, East Palo Alto, El Sobrante, Emeryville, Fairfax Union City, San Jose, Sunnyvale, Menlo Park, Bayside, Berkeley, Palo Alto, Foster City, Corte Madera, Greenbrae, Half Moon Bay, Healdsburg, Kensington, Larkspur, Martinez, Mill Valley, Milpitas, Mountain View, Newark, Novato, Brisbane, Burlingame, Campbell, East Bay, Silicon Valley, and Napa Valley, Oakley, and Discovery Bay, as well as Contra Costa, San Francisco, San Mateo, Santa Clara, Solano, Alameda, Marin, Napa, and Sonoma counties.