Olivia Long, Founder & Principal Attorney at O. Long Law, LLC
Attorney

Olivia Long

Olivia founded O. Long Law after seeing too many firms leave clients without the information they need to make good decisions in a divorce. She pairs litigation experience from large law firms with a no-nonsense approach to protecting families, seeking mediation and negotiation where possible and fighting hard where it isn't. Clients know her for straight answers, clear options, and creative legal solutions.

I want clients to know they can get closure after a dispute: they can be financially secure, and their kids will be ok.

Education

University of Chicago, J.D. 2009 (Semi-Finalist, Hinton Moot Court); University of Texas, B.A. 2004

Bar Admission

Illinois, California

Practice Areas

Family Law, Divorce, Child Custody, Spousal Support, LGBTQ Legal Matters, Child Support, Protection Orders, Guardian ad Litem (Cook County), Parenting Coordinator (Cook County)

Awards & Membership
  • SuperLawyers (2026)
  • Lyric Opera Young Professionals Board Member-At-Large (2025-2026)
  • Lilac Tree Board Member (2025-2026)
  • Cook County approved GAL and Parenting Coordinator (2022-2026)
  • Illinois State Bar Association: Women and the Law Committee (2024-2026)
  • Lesbian and Gay Bar Association of Chicago: Judicial Evaluation Committee (2020-2025)
  • Illinois State Bar Association: Sexual Orientation & Gender Identity Committee (2021-2024)
  • Lilac Tree Referral Panel Member (2019-2024)
  • Elite Lawyer Award, Illinois Family Law
  • Best Divorce & Child Custody Lawyer 2024 (Illinois) - Legal Elite Awards 2024 by New World Report
  • Best Divorce & Child Custody Lawyer 2023 (Illinois) - Legal Elite Awards 2023 by New World Report
  • University of Chicago's Graduate Student Legal Services Liaison (2019-2024)
  • Woman's Club of Evanston, member since 2017
  • Association of Family and Conciliation Courts, member since 2017

Biography

Olivia noticed that too many firms do not provide clients the tools they need to make good decisions in their family law disputes. She wanted to correct that. In divorce, clients should have information and support so they understand the process and don't feel intimidated into making deals just to get things over with. With considerable litigation experience gained from working in large law firms, a command for high-stakes negotiation, and a no-nonsense approach to protecting families, Olivia founded O. Long Law.

Often praised for her straight answers, clear options, and creative legal solutions, Olivia leverages her skills to assist people going through the trauma of divorce, domestic violence, and disputes involving custody and child support. Whenever possible, she seeks opportunities for mediation and negotiation. But Olivia is an aggressive advocate who's always ready to fight for her clients, their children, and their financial well-being.

In college, Olivia was a letterwinner in rowing and a Big XII Scholar-Athlete. She enjoys singing and can often be found helping to stage the musical benefit show at the Woman's Club of Evanston. She lives in Evanston with her wife, kid, two cats, and a pit bull named Westside. Olivia also enjoys traveling the world to watch her stepson compete in karate.

Publications, Presentations, and Media

2026

  • Olivia St. Clair Long and M.K. Clayton, "Abortion Bans: How Post-Dobbs Restrictions Will Impact States Without Their Own Abortion Limits," The Catalyst (Illinois State Bar Association), May 2025, Vol. 30 No. 4, at 7.
  • Ten Years of Marriage Equality in Illinois: A Retrospective, presented by the Northwest Suburban Bar Association

2025

  • Orders of Protection and Stalking/No Contact Orders, presented by Bielski Chapman, Ltd.
  • What is a Financial Affidavit?, presented by The Lilac Tree
  • Panelist: 2025 Women in the Law Conference, presented by Loyola University School of Law

2024

  • Ten Years of Marriage Equality in Illinois: A Retrospective, presented by the Illinois Human Rights Commission
  • Ten Years of Marriage Equality in Illinois: A Retrospective, presented by ISBA Sexual Orientation and Gender Identity Committee
  • Decoding Hourly Billing for Attorneys, presented by the Lady Lawyers who Lunch
  • Moderator: Judicial Panel on Family Law Matters, presented by the Women's Bar Association of Illinois and the Lady Lawyers who Lunch

2023

  • Divorce University: LGBTQ Considerations in Separation and Divorce, presented by The Lilac Tree
  • Moderator: Judicial Panel on Family Law Matters, presented by the Women's Bar Association of Illinois and the Lady Lawyers who Lunch

2022

  • Panelist: Divorce University, presented by The Lilac Tree
  • Moderator: Judicial Panel on Family Law Matters, presented by the Women's Bar Association of Illinois and the Lady Lawyers who Lunch

2020

  • Interviewing Children as a GAL, presented by the Circuit Court of Cook County
  • Moderator: Best Practices for Attorneys Representing Children, Chicago Volunteer Legal Services

2019

  • The Pro Se Guide to Divorce, presented by The Lilac Tree
  • Panelist: Divorce University, presented by The Lilac Tree
  • Panelist: Sexting, Revenge Porn and Cyberstalking: The Intersection of Technology and Domestic Abuse, presented by Shalva

Pulblication and Media

Featured In

The Catalyst, the newsletter of the Illinois State Bar Association's Standing Committee on Women and the Law

Getting to Know Her: An Interview With Olivia St. Clair Long

The ISBA's Women and the Law committee profiled Olivia as one of its newest members. The interview traces her path from big-law commercial and trust litigation, and years of volunteer work with the Domestic Violence Legal Clinic in Cook County, to founding O. Long Law in October 2017.

It also covers the parts of her work that do not show up on a docket: building a firm culture where leaders serve the people they lead, co-creating Litigator Launch Pad to train new litigation associates, and her long-running role in the Woman's Club of Evanston Revue, where she served as Creative Director in 2024.

"As fierce as you need them to be."
Read It at the ISBA

Article copyright Illinois State Bar Association. Summary published with attribution; full text available through the ISBA.

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Olivia Long, Founder & Principal Attorney at O. Long Law, LLC
Attorney

Olivia Long

Olivia founded O. Long Law after seeing too many firms leave clients without the information they need to make good decisions in a divorce. She pairs litigation experience from large law firms with a no-nonsense approach to protecting families, seeking mediation and negotiation where possible and fighting hard where it isn't. Clients know her for straight answers, clear options, and creative legal solutions.

I want clients to know they can get closure after a dispute: they can be financially secure, and their kids will be ok.