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Sean P. Connolly

Criminal defense Attorney at Clarendon Hills, IL

5.0   2 reviews

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About Sean

Learn Sean’s areas of practice.

Practice areas
  1. Criminal defense
    A former prosecutor. Represent clients charged with offenses ranging from traffic tickets to homicide. Additionally, I represent clients charged with overweight truck offenses.

    14 years

  2. Litigation
    General civil litigation focusing on breach of contract, collections, and personal injury.

    17 years

I am an attorney with a broad range of legal experience.  Since beginning my legal career in 2002 I have worked as a criminal prosecutor, a commercial litigator, a deputy general counsel, and now a private practicioner with my own firm. 

In addition to my civilian career, I am also a Major in the United States Army Reserve where I currently serve as a Judge Advocate.  I began my military service in R.O.T.C. at John Carroll University.  I was commissioned a Second Lieutenant upon graduation from college in 1996 and served on active duty.  In 1999, I left active duty to attend law school and joined the Illinois Army National Guard.  In 2000, I joined the Army Reserve.

In 2003, I was recalled to active duty and mobilized to the Middle East in support of Operation Enduring Freedom and Operation Iraqi Freedom. 

I reside in the suburbs of Chicago and when I am not working I enjoy spending time with family and friends, working out, running, biking, tennis, and fishing.

Licensed for 20 years
State IL
Status Active and Authorized to Practice Law
Acquired 2002
Updated 01/06/2023

We have not found any instances of professional misconduct for this lawyer.

Contact Sean

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Connolly Law Office, P.C.
115 W. 55th Street
Suite 400
Clarendon Hills, IL, 60514-6395


5.0 / 5.0
  2 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Martin | November 22, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Outcome
Mr. Connolly provided excellent service for a recent citation. He not only knows DOT, Trucking and Permitting law, he UNDERSTANDS them. His involvement in my case has resulted in tremendous savings.
Posted by Andre | November 18, 2012
As the addage goes " In a Heartbeat" I originally retained one attorney that wanted to do whatver the prosecutor wanted and actually apologized for bothering the prosecutor with me sitting there watching. I dismissed this attorney and by whatever reason you wish to choose, I found Mr. Sean Connolly. We had the service to our country as a common attribute. But, I could talk to him. He did not dismiss me or try to get the details and get rid of me as quickly as he could. We talked. Not only about my case but, simple human issues. He cares and is one of us. Meaning he takes the time to listen. He took my case and in the end it was dismissed. He knew how to acheive this dismissal and the prosecutor could only see blood in the water the first time I went to court and personally told me to my face in the form of a threat that she would not accept anything other than my prosecution to full extent of the law. " Egg on her face" after Mr. Connolly represented me. Thank You Sean THANK YOU!
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Contact for Details


AVVO RATING 8.3 (Excellent)

Work Experience

  • President
  • Connolly Law Office, P.C.
  • 2009 - Present
  • Major
  • United States Army Reserve
  • 2000 - Present
  • Deputy General Counsel
  • Illinois Department of Central Management Services
  • 2008 - 2009
  • Associate
  • Epstein Becker & Green, P.C.
  • 2007 - 2008
  • Assistant State's Attorney
  • Cook County State's Attorney's Office
  • 2002 - 2007
  • Lieutenant
  • Illinois Army National Guard
  • 1999 - 2000
  • Lieutenant
  • United States Army
  • 1996 - 1999
View all work experience


  • Northern Illinois University College of Law
  • JD - Juris Doctor
  • 2002
  • John Carroll University
  • BA - Bachelor of Arts
  • 1996


  • Bass Anglers Sportsman Society (B.A.S.S.)
  • Member
  • 2010 - Present
  • Illinois State Bar Association
  • Member
  • 2009 - Present
  • Southwest Suburban Bar Association
  • Member
  • 2009 - Present
  • Veterans of Foreign Wars of the United States
  • Senior Vice Commander
  • 2005 - Present
  • Association of the United States Army
  • Member
  • 1998 - Present
View all associations

Languages Spoken

  • English

Honors and Awards

  • Featured Author
  • Target Law
  • 2011
  • Featured Contributor
  • ExpertHub
  • 2011
  • The Army Achievement Medal
  • COL John R. Matthews
  • 2005
  • Special Commendation
  • Prosecutor Bar Association
  • 2004
  • The Army Achievement Medal
  • COL John R. Matthews
  • 2004
  • The Bronze Star Medal
  • Secretary of the Army
  • 2003
  • The Army Commendation Medal
  • MG Anthony R. Kropp
  • 2002
  • The Army Achievement Medal
  • LTC Walter M. Golden, Jr.
  • 1999
  • The Army Commendation Medal
  • COL James A. Kelley
  • 1999
  • Distinguished Service Award
  • Cook County State's Attorney's Office
  • N/A
View all awards


  • Chicago Daily Law Bulletin
  • Kuwaiti Journal: Scud Alerts, Sleepless Vigil
  • 2003
  • Chicago Daily Law Bulletin
  • Troops prepare to put their engineering skills to use in Iraq
  • 2003
  • Chicago Daily Law Bulletin
  • Iraqi Journal: Chicago lawyer interviews prisoner of war
  • 2003
  • Chicago Daily Law Bulletin
  • Americans, Iraqis alike experience hardship
  • 2003
View all publications

Attorney endorsements

Received (4)
Given (4)
Endorse Sean
Criminal defense Attorney | Feb 13
Relationship: Worked together on matter
"Sean is a hardworking, knowledgeable, and dedicated attorney. He treats his clients with respect and gives each client personalized treatment."
Unknown Attorney | Nov 08
Relationship: Worked together on matter
"I endorse this lawyer for his integrity and legal ability"
Criminal defense Attorney | Mar 22
Relationship: Fellow lawyer in community
"Mr. Connolly is a knowledgeable and diligent attorney, providing quality representation to his clients. I endorse this lawyer."
Criminal defense Attorney | Feb 18
Relationship: Fellow lawyer in community
"Sean Connolly's training and experience give him great advantage in the courtroom. Whether he is arguing a case at trial, or negotiating a favorable settlement, Sean is someone I would want on my side to aggressively represent my interests."
Criminal defense
Personal injury
Criminal defense