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About me

John G. Gromowsky is a Kansas City criminal defense attorney practicing in federal and state courts throughout the metropolitan area.  As a former prosecutor, John knows how cases are investigated, charged, and prosecuted.  He now puts this knowledge to use representing people being investigated for or charged with criminal offenses.


Practice areas


  1. Criminal Defense: 40%
  2. White Collar Crime: 35%
  3. Violent Crime: 25%



Hourly ($250-400/hour), Fixed (sometimes)

Payment types:

Cash, Check

Attorney endorsements

4 total 

Are you an attorney? Endorse this lawyer

  • Michael S. Waddington

    I endorse John. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

  • John R. Osgood

    I endorse this lawyer. Outstanding trial attorney. He was co-defendant counsel in a captial case I tried. He is highly ethical, well repsected by his peers, the courts and his clients. He has excellent trial skills and is a credit to the profession.


    John Osgood Federal crime Attorney
    Relationship: Worked together on matter

Contact info

1100 Main Street
Suite 2800
Kansas City, MO, 64105

Ste 2800
1100 Main Street
Kansas City, MO, 64105



KSAuthorized to practice law200107/04/2016
MOGood Standing, Active199901/08/2013
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Super LawyerSuper Lawyers Magazine2015
Super LawyerSuper Lawyers Magazine2014
Super LawyerSuper Lawyers Magazine2013
Super LawyerSuper Lawyers Magazine2012
Super LawyerSuper Lawyers Magazine2011
Super LawyerSuper Lawyers Magazine2010
Super LawyerSuper Lawyers Magazine2009
Best of the BarKansas City Business Journal2009
Finalist - Thomas J. Conway AwardKansas City Metropolitan Bar Association2003
Parachutist BadgeUnited States Army1990
Ranger TabUnited States Army1990
Work experience
TitleCompany nameDuration
MemberThe Gromowsky Law Firm, LLC2005 - Present
AssociateHorn Aylward & Bandy, LLC2002 - 2005
Assistant Prosecuting AttorneyJackson County Prosecutor's Office1999 - 2002
Judicial Law Clerk, Hon. John R. O'MalleyCircuit Court of Jackson County, Missouri1998 - 1999
Law ClerkCook County State's Attorney's Office1997 - 1998
Infantry OfficerUnited States Army1989 - 1994
Association namePosition nameDuration
Kansas City Metropolitan Bar AssociationCriminal Law Section - Secretary/Treasurer2015 - Present
Kansas City - Ross T. Roberts American Inn of CourtMaster2012 - Present
Kansas City Metropolitan Bar AssociationMember1999 - Present
The Missouri Bar AssociationMember1999 - Present
Kansas City Metropolitan Bar Association, Criminal Law SectionSenior Member-at-Large2014 - 2015
Kansas City Metropolitan Bar Association, Criminal Law SectionJunior Member-at-Large2013 - 2014
Kansas City Metropolitan Bar Association, Criminal Law CommitteeVice Chair2012 - 2013
American Bar Association, Criminal Justice SectionMember2009 - 2010
Missouri Association of Criminal Defense LawyersMember2008 - 2010
Jackson County, Missouri, Ethics CommitteeSpecial Counsel2008 - 2009
Kansas City Metropolitan Bar Association, Criminal Law CommitteeChairman2008 - 2008
Kansas City Metropolitan Bar Association, Criminal Law CommitteeVice Chair2007 - 2007
Kansas City Metropolitan Bar Association, Solo Practitioner/Small Firms CommitteeMember2005 - 2006
Kansas City, Missouri, Community Police Steering CommitteeMember2001 - 2002
Kansas City Crime Commission, Metropolitan Community Service BoardMember2001 - 2002
The Kansas Bar AssociationMember2001 - 2011
Publication nameTitleDate
The Gromowsky Law BlogThe Gromowsky Law Blog2009
School nameMajorDegreeGraduated
DePaul University College of LawLawJD - Juris Doctor1998
United States Military AcademyInternational RelationsBS - Bachelor of Science1989