• Walnut Creek Criminal Defense
    Protecting Your Rights
    Former Prosecutors and Superior Court Judge

Walnut Creek Criminal Attorneys

O'Connor, Runckel & O'Malley LLP is a law firm serving Walnut Creek, Contra Costa County, and the greater San Francisco Bay Area.  We are committed to the zealous representation of our clients in a wide array of criminal matters.

The lawyers at O'Connor, Runckel & O'Malley have more than 90 years of trial experience. We have successfully negotiated thousands of cases. We have tried and presided over more than 250 jury trials. Our courtroom skills are unparalleled. Most attorneys fear the inside of the courtroom. That is where the partners at O'Connor, Runckel & O'Malley feel most comfortable. Let us put our experience to work for you.

If you have been charged with a criminal offense, hiring the right lawyer can make all the difference. The Bay Area criminal defense attorneys at O'Connor, Runckel & O'Malley are dedicated advocates working to defend and protect the rights of every client. 

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 plea agreements for our clients in the cases that don't go to trial.

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 us for a free consultation, you will gain all the advantages of our attorneys' experience and knowledge. We will not be satisfied until you have enough information to be comfortable with your situation. We will personally handle your case from the initial consultation until the case is closed.

If you have a legal question, call us or submit one of the contact forms on the website to schedule a time to speak with one of our attorneys.

Former Prosecutors and a Superior Court Judge

As former Deputy District Attorneys we are extremely familiar with the tactics and arguments used by prosecuting attorneys. This knowledge provides us with the insights necessary to provide you with the best possible defense. Add to that the knowledge of a former Superior Court Judge on how arguments and tactics are viewed from the other side of the bench, and the result is the highest quality criminal defense available.

The Bay Area Criminal Attorneys at O'Connor, Runckel & O'Malley LLP specialize in the following criminal defense practice areas:


Best attorney around

5 Star Rating
As Seen On AVVO

Posted by a Personal Injury client 

Thomas O'Connor is simply the best attorney around. He is dedicated, knowledgeable and very experienced. I would trust him with anything. He is on your side and will give it to you straight so you know where you stand at all times. Very down to earth and really understands what it takes to achieve results. I am very thankful to have come in contact with Mr. O'Connor.

Bay Area Criminal Defense Practice

In our Bay Area criminal practice, we draw upon our vast experience trying and presiding over misdemeanor and felony cases during our years as Deputy District Attorneys and a Superior Court Judge. The cornerstone of our law firm's success is the extensive criminal law experience of Tom O'ConnorJason Runckel & Dan O'Malley. We have negotiated thousands of criminal cases and successfully tried and presided over hundreds of high profile felony and misdemeanor cases; including, murder, arson, residential burglary, torture, three strikes cases, domestic violence, driving under the influence, sex crimes, vehicular manslaughter, assault with deadly weapon, robbery, and juvenile.  As a result of our criminal experience, we have had extensive dealings with state and federal judges, prosecutors, and every law enforcement agency in the bay area.  In summary, our trial ability and negotiating skills are unsurpassed.

In The News

Attorney Dan O'Malley is interviewed on
CBS 5 News.

Attorney Dan O'Malley on CBS 5 News
Million Dollar Advocates Multi-Million Dollar Advocates Consumer Attorneys of California Yelp Reviews - Walnut Creek Attorney SuperLawyers Avvo Walnut Creek Attorney

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.