Thomas D. Colin

The Honorable Thomas D. Colin (ret.) handles matters statewide, including all aspects of traditional client representation, litigation and Alternative Dispute Resolution services as an arbitrator, mediator, special master, and private judge. He leads the mediation/arbitration department at Siegel, Colin, & Kaufman.

In 2018, Attorney Colin returned to private practice after spending five years as a trial court judge handling primarily family and criminal matters, including serving as the presiding judge for family matters in the judicial district of Stamford/Norwalk at Stamford, where some of the nation’s most sophisticated financial family law cases are heard. As a family court judge, he presided over the court docket. He heard and mediated many cases involving complex financial issues, particularly in the financial services/investments field, as well as many child custody matters. He also regularly presided over the weekly domestic violence criminal court docket and served on the Connecticut Judges Institute Education Committee and the Evidence Oversight Committee of the Supreme Court. His duties as a judge included handling criminal jury and bench trials, family court trials, probation violation, suppression and firearms safety hearings, arraignments, pretrial settlement conferences in both family and criminal cases, mediations in family cases, and all of the usual and customary matters heard by a trial court judge.

Before becoming a judge, Attorney Colin had an extraordinary amount of trial and mediation experience throughout Connecticut in complex child custody and financial divorce-related matters. He has handled many high-profile cases involving spouses and individuals in the entertainment, sports, medical, legal and finance industries. Other attorneys frequently hire Tom as their own representation.

Throughout his multi-decade career, Attorney Colin has developed a reputation throughout the state as a seasoned and tenacious litigator willing to try the most complex cases when a reasonable out-of-court settlement cannot be reached. Other family law attorneys often bring Attorney Colin in as co-counsel on complex cases. His experience as an attorney and a judge gives him a unique skill set and perspective that his peers trust and value.

In addition, he has vast experience in negotiating prenuptial and postnuptial agreements and litigating their enforceability. In 2007, Attorney Colin served as lead trial counsel for the successful parent in what was reportedly the longest child custody trial in United States history, spanning over eight months. In addition, Attorney Colin is a former President of the Connecticut Chapter of the American Academy of Matrimonial Lawyers and Chair of the Family Law sections of both the statewide Connecticut Bar Association and the Fairfield County Bar Association.

Attorney Colin is an adjunct professor of family law at the Quinnipiac University School of Law, where he has taught both basic and advanced family law, including family trial practice. He has lectured and taught nationally and in Connecticut to many groups, including judges, lawyers, law students, and family services counselors. He has also appeared on a nationally syndicated talk show as a legal analyst to discuss and demonstrate divorce mediation. His teaching topics generally involve family law, evidence (including electronic, social media and other computer-related evidence) and trial practice, and many are noted below.

After completing law school, Attorney Colin served as a law clerk for Justice Paul L. Rudman of the Supreme Judicial Court of Maine. Attorney Colin then joined the law firm of Cummings & Lockwood in Stamford, Connecticut, where he joined two legends in the field of family law, Samuel V. Schoonmaker, III and Cynthia Coulter George, in the firm’s family law practice group. Along with Attorney Colin, Attorneys Schoonmaker and George formed Schoonmaker, George, and Colin in 1996.

Thomas D. Colin, Founder

(203) 326-5145


Bar Admissions
Connecticut, (1992)
New York, (1993)
Maine, (1993)
United States Court for the District of Connecticut, (1994)
United States Supreme Court. (2007)

CW Post College, B.A. 1989
St. John’s University School of Law, J.D. 1992

Distinctions, Honors and Awards

  • Connecticut Superior Court Judge: 2013-2018
  • Selected to Connecticut Super Lawyers® 2006 to 2012 and 2019 to 2024
  • Super Lawyers® Top Lists:
    • Top 50 Lawyers in Connecticut in 2023
    • Top 50 Lawyers in Connecticut in 2012
    • Top 100 Lawyers in all of New England in 2011
    • Top 50 Lawyers in Connecticut in 2011
    • Top 50 Lawyers in Connecticut in 2010
    • Top 50 Lawyers in Connecticut in 2009
    • Top 100 New England Super Lawyers 2008
    • Top 50 Lawyers in Connecticut in 2008
    • Top 100 New England Super Lawyers 2007
  • Best Lawyers in America 2006 to 2011/2012, 2019-2024
  • Best Lawyers in America 2011 Lawyer of the Year Award for Family Law, Greenwich
  • Martindale-Hubbell®, AV® Preeminent™ 2009-2011
  • Top Family Lawyer in Stamford, Connecticut 2019/2020
  • Board of Directors, Fairfield County Bar Association 2019/2020

11/8/22 – CCDLA Seminar – Quinnipiac Presentation, “Digital Evidence in Family Law Cases: What You Need to Know Before it ‘Bytes’ You …”

4/26/22 – CBA Seminar – Navigating Arbitration in Family Law

2/2/22 – FCBA Seminar, “Mediation of Civil / Family Cases” (with Judge Holzberg, Judge Mintz and Attorney Lambert)

10/15/19 – Marcum Advisory Consulting Forum for small business owners. Led the topic discussion: “Is Your Business Prepared? Litigation Risk as a Business Owner.”

9/19 – Speaker at the American Academy of Matrimonial Lawyers monthly meeting. Topic presented: “What Every Lawyer Should Know About Judging.”

4/2/19 – Judge Colin (retired) Presented on the topic of Search and Seizure Law at the Ridgefield Citizens Police Academy at the Ridgefield Police Department.

1/16/19 – Presenter at the Fairfield County Bar Association conference on handling Domestic Violence Cases Pending Simultaneously in Criminal and Family Court.

1/10/19 – Appeared on The Lisa Wexler Show on WGCH AM 1490 in “News and Politics” and discussed the Connecticut court system.

6/11/18 – Exacting Evidence: How to Get It In and How to Keep It Out, Connecticut Legal Conference, Connecticut Convention Center, Hartford, CT

4/27/18 – The Anatomy of a Trial, Featured Guest Moderator, Connecticut Chapter of the American Academy of Matrimonial Lawyers, Quinnipiac University North Haven, CT

2/21/18 – Evidence in Family Court, Fairfield County Bar Association, Stamford, CT

6/14/17 – Motions to Open Family Court Judgments (Course Liaison), Connecticut Judges Institute, University of Connecticut School of Law

6/12/17 – Ten Tips in Family Court, Connecticut Bar Association Annual Meeting, Hartford, CT

5/3/17 – Evidence in Family Court, Bridgeport Bar Association, Bridgeport, CT

4/28/17 – Law Day Remarks as Assistant Administrative Judge, Stamford Courthouse, Stamford, CT

2/6/17 – Remarks regarding Family Court, Legislative Breakfast Reception, Stamford Courthouse, Stamford, CT

11/3/16 – Panelist for the Bench-Bar Symposium on Professionalism co-sponsored by Connecticut Bar Association, Fairfield County Bar Association, Stamford, CT

9/21/16 – Annual Speech for Presiding Judge, Fairfield County Bar Association, Stamford, CT

6/21/16 – Tips, Tools & Techniques for Handling High Conflict Family Cases, Connecticut Judges Institute, University of Connecticut School of Law

5/26/16 – Evidence in Family Court, Milford Bar Association, Milford, CT

5/12/16 – Discussion with the Collaborative Divorce Attorneys of Fairfield County, Stamford, CT

5/10/16 – Judges Roundtable, Connecticut Bar Association Family Law Section, Milford, CT

5/6/16 – Faculty Member, Appellate Advocacy Institute, Connecticut Bar Association, New Britain, CT

4/6/16 and 4/9/17 – Search & Seizure, Citizens Police Academy, Ridgefield, CT

11/12/15 – Evidence in Family Court, New Haven County Bar Association, New Haven, CT

9/16/15 – Annual Speech of the Presiding Judge, Fairfield County Bar Association, Stamford, CT

6/3/15 – When Domestic Issues Result in Criminal Charges, Fairfield County Bar Association Criminal Law Section, Stamford, CT

6/2015 – Evidence in Family Court, Connecticut Judges Institute, New Haven, CT

4/6/15 – Discussion with American Academy of Matrimonial Lawyers, Shelton, CT

9/17/14 – Annual Speech of the Presiding Judge, Fairfield County Bar Association, Stamford, CT

6/11/12 – Annual Review of New Developments in Family Law, Connecticut Bar Association Annual Meeting

5/18/12 – Advanced Custody Seminar, Connecticut Chapter of the American Academy of Matrimonial Lawyers

3/15/12 – Family Violence in Connecticut: Trauma, Trends, and Triage, Connecticut Bar Association

11/16/11 – Sexual Abuse Allegations in Family Cases, Connecticut Bar Association

Professional Associations and Membership

  • Fellow, American Academy of Matrimonial Lawyers
    • Board of Managers, 2005-13; Member, 2001-13
  • Former President, American Academy of Matrimonial Lawyers, Connecticut Chapter, 2012-13. Past Continuing Legal Education Chair, Secretary and Treasurer
  • Connecticut Bar Association Standing Committee on Professional Ethics, Member, 2011-12 
  • Connecticut Bar Association Family Law Section
    • Chairperson, 2006-2007
    • Vice Chairperson, 2005-06
    • Continuing Legal Education Chair, 2004-05
    • Secretary, 2003-04
    • Treasurer, 2002-03
  • American Bar Association Family Law Section
  • Ethics, Professionalism and Grievance Committee, past Co-Chair
  • Fairfield County Bar Association Family Law Section, past Chair, Board of Directors 2019-2022
  • Former Member, Board of Editors, Connecticut Family Lawyer
  • Connecticut Family Matters Advisory Board, past member
  • Co-Editor, Connecticut Family Law Citations 
  • Connecticut Delegation to the Tri-State Leadership Conference to Improve Decision-making in high conflict child custody cases
    • Sponsored by the Division of Law and Psychiatry at Yale University School of Medicine and the Children and the Law Program of Massachusetts General Hospital), past member
  • Adjunct Professor, Quinnipiac School of Law, family law trial practice classes, 2013 to present
  • Judges Advisory Committee on e-filing 2014, 2015, 2016, 2017
  • Evidence Oversight Committee of the CT Supreme Court 2014, 2015, 2016, 2017, 2018
  • Judge’s Education Committee, 2019 – 2022
  • Alimony Reform Study Committee of CT Law Revision Commission 2013/14

Take Your Next Step Today

The attorneys at Siegel, Colin & Kaufman are committed to helping you through the complexities of divorce and family law problems. We’re here to help you take the first steps towards a new chapter in your life, offering the guidance and support you need during these challenging times. 

With offices in Stamford and Westport, we serve clients from Greenwich, New Canaan, Darien, Ridgefield, and throughout the Northeast.

Let us be your trusted partner as you embark on this new chapter in your life. Remember, you don’t have to face these challenges alone.

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