Erinn McKee Hannigan is an attorney and mediator who has always limited her practice exclusively to family law. Erinn practices in Hamilton, Clermont, Warren and Butler Counties in Ohio. She is an Honors College graduate of Ball State University in 1995. She received her law degree from Loyola University Chicago School of Law in 2002 and earned a Certificate of Childlaw from her law school by concentrating her legal studies in the areas of child and family law. She was admitted to the North Carolina bar in 2002 and Ohio in 2006.

Erinn focuses her entire legal career on children and families. Erinn has significant experience handling complex and high conflict family law matters in domestic relations and juvenile courts. Erinn works with families on dissolution, parenting, custody and support matters.

After spending over fifteen years working within the Court system, Erinn decided it was time to work with her clients exclusively on out of court settlements. Erinn assists clients in mediation, negotiation, settlement conferences, Collaborative Practice and other alternative dispute resolutions processes.

She is certified by the Ohio Supreme Court as a domestic relations mediator and an active collaborative law professional. Erinn served as the co-chair of the Cincinnati Academy of Collaborative Professionals and continues to serve on the board of that organization.

Erinn serves as a Guardian ad Litem in the Hamilton County Court of Domestic Relations Erinn presents at various seminars across the state of Ohio on Family Law and Collaborative Law matters.


• Collaborative Practice
• Mediation Representation
• Mediator
• Dissolution
• Negotiation
• Review & Advise
• Guardian ad Litem
• Parenting Coordinator (Effective July 2018)

• Loyola University Chicago School of Law (J.D.)
• Loyola University Chicago School of Law (Certificate of Child law)
• Ball State University (B.A., with honors)

• Cincinnati Academy of Collaborative Professionals
• International Association of Collaborative
• Cincinnati Bar Association, Domestic Relations Section member
• Ohio Bar Association
• North Carolina Bar Association
• Cinderella’s Closet, Northern Kentucky committee co-chair

• Super Lawyer Rising Star 2006-2013
• Super Lawyer 2013-2017
• Top 25 Women Lawyers in Cincinnati 2016


30 Garfield Place, Suite 760, Cincinnati, OH 45202