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Diane S. Diel

Attorney Profile

Top Rated Family Law Attorney in Milwaukee, WI

Diane S. Diel SC
126 North Jefferson Street, Suite 201
Milwaukee, WI 53202
Phone: 414-224-5355
Fax: 414-224-1646
Selected to Super Lawyers: 2005 - 2021
Licensed in Wisconsin Since: 1976
Practice Areas: Family Law
Attorney Profile

Attorney Diane S. Diel, founder of the law firm Diel Law, has dedicated her entire practice to helping families in Milwaukee and the surrounding areas find positive solutions to a wide variety of family law concerns. She knows how difficult it can be when a family is attempting to navigate complex legal issues, which is why she provides high-quality and compassionate legal counsel for a variety of legal issues, including:

  • Divorce
  • Child custody
  • Financial support
  • Property division

In addition to these practice areas, she also offers guidance for couples who may benefit more from an alternate approach than from a traditional divorce, which is why clients turn to her reputable law firm for skilled mediation and collaborative law representation. She provides insight and other tools to help families successfully emerge from difficult transitions.

Diane S. Diel is a 1976 graduate of the University of Wisconsin Law School in Madison. Over the decades of practicing law, she has developed a record of consistent results and excellence in virtually all types of civil and litigation matters. Since 2010, she has leveraged her years of qualified experience in family law issues to focus much of her practice on collaborative law and mediation.

Ms. Diel is a respected member of the legal community, and she is a member of various professional legal associations, including the State Bar of Wisconsin and the Association for Women Lawyers. She is a member of the International Academy of Collaborative Professionals and has also earned the honor of an AV Preeminent peer review rating* from Martindale-Hubbell.

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Rating™ fall into two categories – legal ability and general ethical standards.

Practice Areas
  • 100%Family Law
Focus Areas

Alimony & Spousal Support, Custody & Visitation, Divorce, Mediation & Collaborative Law


17 Years Super Lawyers
  • Super Lawyers: 2005 - 2021

Articles about Diane S. Diel appearing in Super Lawyers

About Diane S. Diel

First Admitted: 1976, Wisconsin

Professional Webpage:

Bar/Professional Activity

  • President-Elect, State Bar of Wisconsin, 2007
  • Governor, State Bar of Wisconsin, 2009-2010
  • Director, State Bar of Wisconsin Family Law Board of Directors, 1993-1999
  • Chairman, Southeastern Wisconsin Chapter, Collaborative Family Law Council, 2000
  • President, International Academy of Collaborative Professionals, 2010 – 2011
  • Member, Association of Women Lawyers, Executive Committee, 1985
  • Past President, State Bar of Wisconsin, 2008–2009
  • Chair, Lawyer Referral Committee, Milwaukee County Bar Association, 1985-1989
  • Governor, State Bar of Wisconsin, 2000-2004
  • Member, State Bar of Wisconsin Committee on Professional Ethics, 2014
  • Past Chair, Collaborative Family Law Council of Wisconsin, 2002
  • Immediate Past President, State Bar of Wisconsin, 2007
  • Member, Association of Women Lawyers, President, 1984-1985
  • Board Member, International Academy of Collaborative Professionals, 2007-2013
  • Chairman and Director, Midwest Regional Women’s Bar Conference, 1996
  • Secretary and Governor, State Bar of Wisconsin, 1988-1992
  • Member, State Bar of Wisconsin Committee on Professional Ethics,  1984-1990
  • State Bar of Wisconsin Family Law, Board of Directors Liaison, Family Law Section Board, 2000-2004
  • President, State Bar of Wisconsin, 2007
  • Co-Chair, Training Committee, Collaborative Family Law Council of Wisconsin, 2003-2006
  • Treasurer, Association of Women Lawyers Foundation, 2006-Present
  • Member, Association of Women Lawyers, Steering Committee, 1980-1985

Pro bono/Community Service

  • Port of Milwaukee Harbor Commissioner, 2014-Present
  • Former Member, Meta House
  • Village of Hales Corners, Member, Police & Fire Commission
  • Village of Hales Corners, President of the Commission, 1998-2005
  • Former Member, Professional Dimensions (professional women’s organization), Board of Directors and Community Involvement Director
  • Former Member, Greater Milwaukee YWCA Board of Directors
  • International Academy of Collaborative Professionals, Co-Chair, Ethics Task Force and Member, Ethics and Standards Committee, 2014-Present
  • Board of Directors, President, Meta House

Educational Background

  • University of Wisconsin, Eau Claire, B.A., with honors, magna cum laude, 1973


  • Founder's Award, Association of Women Lawyers (Milwaukee), 2010
  • Received First Annual Constitutional Law Prize
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Office Location for Diane S. Diel

126 North Jefferson Street
Suite 201
Milwaukee, WI 53202

Phone: 414-224-5355

Fax: 414-224-1646

Last Updated: 5/15/2022

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