John A Conniff

PRO

John A Conniff

4.9
Rating: 10.0

Licensed for 14 years

Divorce and separation Lawyer at Chicago, IL
Practice Areas: Divorce & Separation, Family, Child Custody, Child Support

77 W. Wacker Drive, Suite 4500, Chicago, IL

Virtual Consultation Available

Free Consultation

About John

Biography

With extensive experience and a genuine passion for family law, we handle all family matters with care, discretion, and strength. Get clear guidance and personalized attention from your first call.

Experienced Family Law Attorney - Call (312) 313-7858 for your free consultation.

Practice Areas

4

Practice Areas

Divorce and Separation 80%

Many people don’t consider that their marriage might one day end in divorce, and when a person realizes their marriage is beyond repair, it is often a very stressful experience no matter how good or bad the marriage was.

80%
Family 10%

The Law Offices of John A. Conniff is a boutique firm specializing exclusively in family and divorce law. The firm is committed to providing expert legal guidance to clients,

10%
Child Custody 5%

Understanding the laws involving child custody is vital when engaging in a divorce or parentage action. It is important for a parent seeking custody of their child or children to know the laws and what the Court takes into consideration.

5%
Child Support 5%

Child support is an important element of any divorce in which children younger than 18 are involved. Both parents are responsible for providing the financial support for any minor child or children of the marriage.

5%

Fees and Rates

Cost

Free Consultation

$0 first 30 minutes


Payment Methods

  • Cash
  • Check
  • Credit Card

Licenses

Licensed in Illinois for 14 years

State: Illinois

Acquired: 2011

Active and Authorized to Practice Law

No misconduct found

Location

Law Offices of John A. Conniff

77 W. Wacker Drive, Suite 4500, Chicago, IL, 60601

jacfamilylaw.com

Law Offices of John A. Conniff

Oak Brook Pointe, 700 Commerce Drive, Suite 500, Oak Brook, IL, 60523

jacfamilylaw.com

Law Offices of John A. Conniff

5250 Old Orchard Rd, Suite 300, Skokie, IL, 60077

jacfamilylaw.com

Online Presence

Other places you can find John online.

John A Conniff's Reviews

Avvo Review Score

5.0 /5.0

151 Client Reviews

Showing 1 - 5 of 32 reviews | Communication Style

Posted by Jacqueline | February 08, 2026 | Hired Attorney | Divorce & Separation

John is definitely one of the good ones.

I hired John as my divorce attorney at the end of April 2024. He was attentive, detail oriented, and always let me know where we were during the process. Despite divorce being a very stressful time, he was calm during my storm. He was knowledgeable and represented me well throughout the entire divo...rce and we ended with a favorable outcome.

Posted by anonymous | December 05, 2025 | Hired Attorney | Child Support

Responsive and competent

I hired John to resolve some child support issues with my ex spouse and HFS. Among the lawyers I interviewed with and previously hired for my divorce, John has been by far the most competent, responsive, and reasonable. He replies promptly, goes straight to the facts, and presents his case in court w...ith confidence. He billed fairly and used his time efficiently. My case wasn't a big one, but from the way he handled the details, I wish I had worked with him in all my previous cases.

Posted by Ameel | November 03, 2025 | Hired Attorney | Divorce & Separation

Professional, Supportive, and a Great Advocate

Starting the divorce process was one of the most stressful and confusing experiences of my life, but John made it so much more manageable from day one. He was reassuring, professional, and always took the time to explain what to expect at every stage. John kept me updated frequently and was quick ...to recommend thoughtful next steps whenever things changed. When the opposing counsel made unreasonable demands, John was firm, logical, and immediately proposed fair and well-grounded counters that protected my interests. Throughout the process, he was incredibly responsive , always prompt in his replies whenever I had a question, and detailed about what records I needed to provide and what timelines to follow. His clarity and steady guidance made a complicated, emotional process far less daunting. Most importantly, John was a true advocate for me. I always felt that he genuinely cared about my case and my well-being. I’m deeply grateful for his help and would highly recommend him to anyone looking for a knowledgeable, supportive, and dedicated attorney.

Posted by Josh | May 13, 2025 | Hired Attorney | Family

Best Attorney I've Ever Worked With

From my first conversation with John, I knew this was someone who was intelligent, empathetic and diligent and now that my case has concluded and I no longer need John's services, my initial instinct proved 100% true. John helped me obtain exactly what I needed in my situation and from a financial st...and point, I didn't have to get a 2nd mortgage to get it. John was always very responsive whether via phone or email, always on top of things and not once did I feel like he wasn't in control of the situation. Family cases are obviously a very emotional and trying time, and throughout the process, John always steered me in the right direction and never lead me into something I didn't feel comfortable with. I highly recommend John as an attorney and I personally couldn't be more satisfied with his services and the outcome he achieved for me.

Posted by Sam | March 26, 2025 | Hired Attorney | Divorce & Separation

Excellent Attorney. Consummate Professional. Delivers Results.

John is an excellent attorney. He is knowledgable, professional and very experienced. He very skillfully helped me to navigate a very challenging and protracted (through no fault of his or mine) divorce process. He was responsive, gave practical advice and did a fantastic job of explaining things in ...a succinct manner. He is an excellent negotiator and his advice and advocacy on my behalf resulted in a the negotiation of a very favorable settlement. I highly recommend John as a family law attorney and I will certainly retain his services in future should I have need of an attorney. 5 stars.

See All Client Reviews

John A Conniff's Lawyer Endorsements

Endorse John
Jonathan Brian Merel headshot
Jonathan Merel

Divorce and separation lawyer | Sep 03

Relationship: Worked together on matter

"I had the opportunity to work against John and with John on several cases. He is knowledgable of the law and an excellent advocate for his clients. I would recommend him to anyone seeking a family law attorney."

Stephanie M. Kemen headshot
Stephanie Kemen

Family lawyer | Feb 15

Relationship: Fellow lawyer in community

"John is truly amazing at what he does. I wouldn't hesitate to send my clients his way."

Joseph Pierce O'Brien headshot
Joseph O'Brien

Family lawyer | Feb 16

Relationship: Fellow lawyer in community

"John is well respected by the Judges and other lawyers in his community. He is very reasonable to work with and gets the job done. He tries to promote settlement when possible, to avoid the expenditure of unnecessary fees on a matter. He is also very skilled if the case needs to be taken to litigation. I highly endorse him."

Matthew Fakhoury headshot
Matthew Fakhoury

Divorce and separation lawyer | Jun 28

Relationship: Fellow lawyer in community

"Great attorney, very knowledgeable and responsive to his clients. I endorse this lawyer!"

Cary Dohman headshot
Cary Dohman

Family lawyer | May 11

Relationship: Fellow lawyer in community

"I have had the opportunity to know John for more than 10 years. Not only is John extremely knowledgeable, but he is someone who will fight tirelessly for his clients. I strongly endorse this lawyer."

Jerry Ray Bowman II headshot
Jerry Bowman

Divorce and separation lawyer | Sep 16

Relationship: Fellow lawyer in community

"John Conniff is a great family law attorney in Chicago. He is extremely compassionate and always has his client's best interests in mind."

Summer Gomillion Walker headshot
Summer Walker

Family lawyer | Sep 04

Relationship: Fellow lawyer in community

"Mr. Conniff is a very knowledgeable and experienced attorney. I endorse this lawyer."

Mark V. Clay headshot
Mark Clay

Family lawyer | Aug 29

Relationship: Fellow lawyer in community

"I highly endorse Mr. Conniff. Truly exceptional and caring attorney who gets great results in representing clients. Keep up the great work!"

Michael Allen Biederstadt headshot
Michael Biederstadt

Divorce and separation lawyer | Jul 28

Relationship: Opposing Counsel on matter

"I have had several cases with John and I endorse him as an attorney. He is a knowledgeable, skilled and reasonable opposing counsel that I would highly recommend."

Maxine Weiss Kunz headshot
Maxine Weiss Kunz

Child support lawyer | Jun 28

Relationship: Opposing Counsel on matter

"Mr. Conniff is a worthy opponent."

James Thomas Keleher headshot
James Keleher

Divorce and separation lawyer | Jan 29

Relationship: Fellow lawyer in community

"I have worked with John on a number of family law issues over the years. Each time I am impressed by his professionalism, knowledge, and ability to advocate for his clients both in and out of the courtroom. I would strongly recommend John to anyone looking for a family law attorney."

Marie Christine Fahnert headshot
Marie Fahnert

Divorce and separation lawyer | Jul 02

Relationship: Opposing Counsel on matter

"John and I were opposing counsel in a divorce that dealt with some highly sensitive issues. Our clients approached the divorce in a civil manner. However the divorce dealt with some highly delicate issues that, with a lesser lawyer, could have turned into a fought out divorce. Together, we managed to negotiate the issues and provide our clients with the civilized divorce they deserved. I credit John for keeping matters calm and steering the case away from litigation and moving it toward settlement."

View All Endorsements
Matthew Fakhoury headshot
Matthew Fakhoury

Criminal defense lawyer

Cary Dohman headshot
Cary Dohman

DUI and DWI lawyer

Jerry Ray Bowman II headshot
Jerry Bowman

Personal injury lawyer

Jonathan Brian Merel headshot
Jonathan Merel

Family lawyer

Mark V. Clay headshot
Mark Clay

Immigration lawyer

Michael Allen Biederstadt headshot
Michael Biederstadt

Divorce and separation lawyer

Alia Melissa Caravelli headshot
Alia Caravelli

Family lawyer

Matthew Gilbert Shaw headshot
Matthew Shaw

Child custody lawyer

Maxine Weiss Kunz headshot
Maxine Weiss Kunz

Child custody lawyer

Stephanie M. Kemen headshot
Stephanie Kemen

Criminal defense lawyer

James Thomas Keleher headshot
James Keleher

Divorce and separation lawyer

Experience

Rating:  10.0 (Superb)

Honors

2026

Leading Lawyer, Leading Lawyers Network

2026

Super Lawyer, Super Lawyer

2025

Super Lawyer, Super Lawyer

2024

Rising Star, Super Lawyers

2023

Rising Star, Super Lawyers

2022

Rising Star, Super Lawyers

2021

Rising Star, Super Lawyers

2020

Rising Star, Super Lawyers

2019

Rising Star, Super Lawyers

2018

Top 40 Under 40, The National Advocates

2018

Rising Star, Super Lawyers

2017

Peer Review Rated, Martindale-Hubbell

2017

Client's Choice, Avvo

2017

Top 40 Under 40, The National Advocates

2017

Rising Star, Super Lawyers

2016

Rising Star, Super Lawyers

2016

Client's Choice, Avvo

2016

Top 40 Under 40, The National Advocates

2015

Clients' Choice, Avvo

Work Experience

2015 - Present

Principal, Law Offices of John A. Conniff

2014 - 2015

Associate Attorney, Law Offices of Jonathan Merel, P.C.

2011 - 2014

Associate Attorney, Conniff Law Offices

Associations

2024 - Present

Chicago LGBTQ+ Bar Association

Member

2014 - Present

Michigan State University College Of Law Alumni Association

President-Elect

2011 - Present

Chicago Bar Association

Member

2011 - Present

Illinois State Bar Association

Member

2011 - Present

American Bar Association

Member

2015 - 2018

Family Defense Center Young Professionals Board

Board Member

Education

2011

Michigan State University College of Law

JD - Juris Doctor

2008

DePaul University

Bachelor of Arts

Languages

English

Avvo Rating

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  • Experience & background Years licensed, work experience, education
  • Legal community recognition Peer endorsements, associations, awards
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  • Discipline Disciplinary information may not be comprehensive, or updated. We recommend that you always check a lawyer's disciplinary status with their respective state bar association before hiring them.
Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution