Walnut Creek Office
O’Connor, Runckel and O’Malley LLP
1277 Treat Boulevard, #810
Walnut Creek CA 94597


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. At O'Connor, Runckel & O'Malley, 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 50 years of trial experience. We have successfully negotiated thousands of cases and have tried and presided over more than 250 jury trials. Our courtroom skills are unparalleled. While 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. 

In The News

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

Walnut Creek Criminal Defense Lawyer

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.

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:

Free Consultation



Shumeye M.

San Ramon, CA

 5 Star Rating
As Seen On Yelp

Mr Tom O'Connor was my lawyer for Dui. Mr Tom went over the law. He is very professional & very ethical. he was always available for any questions. He communicates regularly after the court hearing. I am very please with Mr Tom O'Connor work. Thank you Mr O'Connor for your excellent work!

Million Dollar AdvocatesMulti-Million Dollar AdvocatesConsumer 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.