$ 300-600 per hour
also known as O. Long Law, LLC
Olivia’s practice focuses on cases involving complex financial and business analysis, in cases litigated to trial as well as mediation and negotiated settlements.
Before founding O. Long Law, LLC, Olivia practiced commercial and securities litigation at an AmLaw 100 law firm. This experience allows her to provide sophisticated financial solutions for her clients.
Olivia assists her clients in managing the emotional toll of divorce-related conflict and finding long-term solutions that provide financial security as well as closure.
1
Practice Area
9 years
$ 300-600 per hour
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Chat withState: California
Acquired: 2010
No misconduct found
State: Illinois
Acquired: 2010
No misconduct found
909 Davis Street, Ste. 500, Evanston, IL, 60201
9 Client Reviews
Showing 1 - 5 of 9 reviews
Posted by Lindsay | May 14, 2026
10 Stars for Olivia St. Clair Long
I have had the pleasure of knowing and working with Attorney Olivia St. Clair Long for almost a decade. I cannot say enough positive things about her as a person, how she practices law, and her character. I team up with her so I do not have to go against her, and her work is second to none! While O...
Posted by Lindsay | May 14, 2026 | Hired Attorney
Amazing! 10 Stars!!!!
I have had the pleasure of knowing and working with Attorney Olivia St. Clair Long for almost a decade. I cannot say enough positive things about her as a person, how she practices law, and her character. I team up with her so I do not have to go against her, and her work is second to none! While Oli...
Posted by anonymous | February 12, 2026 | Hired Attorney | Divorce & Separation
Unprofessional
I retained Olivia for a very sensitive post divorce matter after specifically seeking new counsel in a tight timeframe on this issue. During our initial consultation, she outlined a clear strategy, assured me her firm had handled numerous similar cases, and confirmed she was willing to take my case. ...
Posted by KATHLEEN | January 16, 2026 | Hired Attorney | Divorce & Separation
Lawyer who gave me agency
Olivia St. Clair Long helped me through a messy divorce. She definitely made me feel heard and that I had agency when my ex tried to get custody when our youngest was 17. He clearly just wanted to avoid paying for health insurance until he was 26. She said, "Oh... you did all the heavy lifting, an...
Posted by anonymous | December 10, 2025 | Hired Attorney | Child Support
Confusing and Rude
Her attorneys gave me a number on support, recommended litigation several times and when I finally was onboard in a matter of a week backtracked, gave confusing reasons, and above all was rude as hell.
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2026
Super Lawyer, SuperLawyers
2025
Elite Lawyer, New World Report
2023
Best Family Law Firm, New World Report
2017 - Present
Attorney, O. Long Law, LLC
2026 - Present
The Lilac TreeBoard Member
2025 - Present
Lyric Opera of ChicagoMember, Young Professionals Board
2023 - Present
Illinois State Bar AssociationWomen and the Law Committee
2018 - Present
Lesbian and Gay Bar Association of ChicagoJudicial Evaluation Committee
2021 - 2025
Illinois State Bar AssociationSexual Orientation and Gender Identity Committee
2017 - 2026
Woman's Club of EvanstonRevue Creative Team
2009
J.D
2004
B.A.
2002
English
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