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William Karl Kirk

also known as Bill Kirk

About me

As a partner at Cowan Kirk Kattenhorn, Mr. Kirk is one of only two attorneys in the State of Washington to pass the Board Certification Exam by the National College for DUI Defense.  Bill was named a "Rising Star" by Washington Law and Politics in 2002 and 2003. Moreover, Bill has also been named a "Super Lawyer" by Washington Law and Politics in 2003, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 and 2015. In 2006, 2007 and 2008 Bill was named one of the 25 Top Defense Attorneys in the State of Washington by the same publication.

Bill is a member of the Board of Regents to the National College for DUI Defense, one of only 12 attorneys in the country to serve in this capacity.  Additionally, Bill is the current President of the Washington Foundation for Criminal Justice, a private organization comprised of this State's best DUI Defense Attorneys.  Bill has spoken in several states (Washington, Oregon, Nevada, California, Georgia, Florida, Louisiana, New York and Massachusetts as well as the Bahamas and the Carribean) in various areas of DUI and BUI defense.


Practice areas


  1. DUI & DWI: 100%



Free consultation (90 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

19 total 

Are you an attorney? Endorse this lawyer

  • David Clay Ryder

    I endorse this lawyer. Absolutely one of the best of the best. On every level.


    David Ryder Litigation Attorney
    Relationship: Fellow lawyer in community

  • Mark C Blair

    I endorse this lawyer. Bill is one of the best DUI lawyers in Washington.


    Mark Blair DUI and DWI Attorney
    Relationship: Fellow lawyer in community

Contact info

Cowan Kirk Kattenhorn

4040 Lake Washington Boulevard NE
Suite 300
Kirkland, WA, 98033-7874


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Super LawyerWashington Law & Politics Magazine2015
Super LawyerWashington Law & Politics Magazine2014
Dean's AwardNational College for DUI Defense2013
Super LawyerWashington Law & Politics Magazine2013
Super LawyerWashington Law & Politics Magazine2012
Board CertificationNational College for DUI Defense2011
Super LawyerWashington Law & Politics Magazine2011
Super LawyerWashington Law & Politics Magazine2010
Super LawyerWashington Law & Politics Magazine2009
Top 25 Criminal Defense Attorneys in Washington StateWashington Law & Politics Magazine2008
Super LawyerWashington Law & Politics Magazine2008
Top 25 Criminal Defense Attorneys in Washington StateWashington Law & Politics Magazine2007
Super LawyerN/A2007
Top 25 Criminal Defense Attorneys in Washington StateWashington Law & Politics Magazine2006
Super LawyerWashington Law & Politics Magazine2006
Super LawyerWashington Law & Politics Magazine2005
Super LawyerN/A2003
Rising StarWashington Law & Politics Magazine2003
Rising StarWashington Law & Politics Magazine2002
Work experience
TitleCompany nameDuration
PartnerCowan Kirk Gaston2000 - Present
Deputy Prosecuting AttorneyKing County Prosecuting Attorney's Office1998 - 2000
Association namePosition nameDuration
Washington Foundation for Criminal JusticePresident2013 - Present
National College of DUI DefenseRegent2009 - Present
Northwest Academy for DUI DefenseFounding Member2001 - Present
Washington State Bar AssociationMember1998 - Present
American Bar AssociationMemberN/A
Washington Association of Criminal Defense AttorneysMemberN/A
Washington State Trial Lawyers AssociationMemberN/A
Washington Foundation for Criminal JusticeVice President2008 - 2013
National College of DUI DefenseState Delegate2005 - 2009
Northwest Academy for DUI DefensePresident2003 - 2003
Washington Foundation for Criminal JusticeSecretary2002 - 2008
National College of DUI DefenseSustaining Member2000 - 2009
Legal cases
Case nameOutcome
City of Seattle v. Austin Seferian-JenkinsCase reduced to lower DUI charge
State of Washington v. Sharon SantosCase reduced to Negligent Driving 1st Degree and client was victorious before Department of Licensing
City of Kirkland v. Carlos GuillenCriminal charge reduced to Reckless Driving. Won Department of Licensing on appeal.
See all legal cases 
Publication nameTitleDate
Defending DUIs in WashingtonStandardized Field Sobriety Testing2008
Defending DUI's in WashingtonBUIs2007
School nameMajorDegreeGraduated
Gonzaga University School of LawLawJD - Juris Doctor1998
Washington State UniversityPolitical ScienceBA - Bachelor of Arts1992
Speaking engagements
Conference nameTitleDate
The Big AppleCross Examination: The Lawyer's Opportunity to Testify2014
I-502: Assess its Impact, Advise Your ClientsI-502 and Impaired Driving2013
Defending DUIsCross Examination of the Arresting Officer2013
NACDL DWI ConferenceEthics and Professionalism in DUI Defense2012
Drinking and Driving InstituteDealing with Field Sobriety Tests2012
Defending DUIsCross Examination: The Lawyers Opporunity to Testify2012
NACDL DWI ConferenceCross Examination on SFSTs2011
Defending DUIsEthics and Professionalism in DUI Defense2011
National College for DUI Defense: Winter SessionSentencing2010
DWI Means Defending with IntegrityStandardized Field Sobriety Testing2010
Discovery: Its ElementaryUse of a Defense Investigator2010
Big Apple ConferenceThe Big Apple Myth of SFSTs2010
National College for DUI Defense: Winter Session4th and 5th Amendment Suppression Motions2009
Mastering Scientific EvideceMock Trial2009
Defending DUIsScientific Myths of Field Sobriety Testing2009
Defending DUIsIgnition Interlock License and the 2:00 am Phone Call2008
Defending DUIsCross Examination of Officer Regarding Field Sobriety Testing2007
National Criminal Investigators AssociationUse of Technology in the Courtroom2006
Defending DUIsCase Law Update2006
ATLA National Summer ConferenceField Sobriety Testing2006
Defending DUIsCase Law Update2005
National College of DUI Defense Winter SessionProper Investigation for DUI cases2004
Defending DUIsDOL Hearings2004
WACDL Defending MisdemeanorsDUI Investigations2003
Washington Interpreters AssociationSample Cross Examination2000