Diane S. Diel



University of Wisconsin – Madison Law School

Received J.D. degree in 1976, graduating with honors (cum laude); received American Jurisprudence award in Constitutional law; received first annual Constitutional Law Prize; on staff of Wisconsin Law Review; Legal Writing Teaching Assistant.

University of Wisconsin – Eau Claire

Received B.A. degree in 1973, graduating with honors (magna cum laude)


Engaged in private practice of law since 1976. Broad experience in virtually all facets of civil practice and litigation. Focus on family law and Collaborative Practice and mediation since 2000.


President, International Academy of Collaborative Professionals (11/1/10 – 10/31/2011)

Board Member, International Academy of Collaborative Professionals (2007-2013)

Past President, State Bar of Wisconsin, effective (2008 – 2009) (Served 3 year term as President-Elect, President and immediate Past President beginning July 1, 2007)

Secretary and Governor, State Bar of Wisconsin (1988-1992) and Governor, State Bar of Wisconsin (2000-2004 and 2009-2010).

Member, State Bar of Wisconsin Committee on Professional Ethics (1984-1990, and 2014).

Director, State Bar of Wisconsin Family Law Board of Directors (1993-June 1999). Board of Directors Liaison to Family Law Section Board (2000-2004).

Past Chair, Collaborative Family Law Council of Wisconsin, 2002.

Chairman, Southeastern Wisconsin Chapter; Collaborative Family Law Council (2000).

Co-Chair, Training Committee, Collaborative Family Law Council of Wisconsin, (2003-2006).

Member, Association of Women Lawyers – President (1984-1985); Executive Committee (1985); Steering Committee (1980-1985).

Treasurer; Association of Women Lawyers Foundation, (2006- present).

Chairman and Director, Midwest Regional Women’s Bar Conference (October, 1996).

Chair, Lawyer Referral Committee, Milwaukee County Bar Association (1985-1989).


Current, Port of Milwaukee Harbor Commissioner, (2014-present).

International Academy of Collaborative Professionals, Co-Chair, Ethics Task Force and Member, Ethics and Standards Committee (2014-present).

Former Member, Professional Dimensions (professional women’s organization); Board of Directors and Community Involvement Director.

Former Member, Meta House (an organization helping women with alcohol and drug abuse problems); Board of Directors, including term as President of the Board.

Former Member, Greater Milwaukee YWCA Board of Directors.

Village of Hales Corners, member of the Police & Fire Commission, with three terms as President of the Commission. (1998-2005).