Nebraska Capitol photos by John Nollendorfs,


William J. Mueller

William J. Mueller is senior partner and co-founder of Mueller Robak LLC. Mr. Mueller has succeeded in combining a strong political and legal background to become one of the state’s leading lobbyists. He advises clients on a broad range of legislative and government relations matters. Mr. Mueller is a graduate of the University of Nebraska College of Law and began lobbying in 1984. He is one of two firm members who were elected President of the student body of the University of Nebraska-Lincoln while in college.  He served as Chair of the Young Lawyers Section of the Nebraska State Bar Association. Mueller has been selected by his peers for inclusion in the Best Lawyers in America and a Great Plains Super Lawyer in Government Relations Law since 2009. He has been selected for Lifetime Membership in America’s Top 100 Attorneys®.  In 2013 and 2015, Mueller was selected as the Best Lawyers Lawyer of the Year in Government Relations practice. Mr. Mueller is a past President of the University of Nebraska Alumni Association and with his spouse, fellow Mueller Robak partner, Kim M. Robak, chaired the campaign of the United Way of Lincoln and Lancaster County in 2015. Mueller, an Ogallala, Nebraska native, and Kim M. Robak, have two daughters, Katherine and Claire. Katherine is a graduate of Vanderbilt University and resides in New York City where she works for a financial services firm in their global payments area.  Claire is a graduate of Pomona College in Claremont, California, and resides in Atlanta where she attends Emory University School of Medicine.


Admitted to Practice:

  • U.S. Court of Appeals for the Eighth Circuit
  • U.S. District Court for the District of NebraskaMartindale-Hubbell
  • Nebraska Supreme Court


  • University of Nebraska College of Law, Juris Doctor
  • University of Nebraska-Lincoln, Bachelor of Science

Professional Affiliations:

  • American Bar Association
  • Nebraska State Bar Association
    • Legislative Counsel, 1984 to present
    • Chair, Young Lawyers Section
  • Lincoln Bar Association
  • National Association of State Lobbyists
    • Executive Committee

Awards and Distinctions:

  • America’s Top 100 Attorneys®
  • Best Lawyers in America®, Government Relations Law
  • Best Lawyers in America®, Lawyer of the Year 2013 and 2015, Government Relations Practice
  • Great Plains Super Lawyer®, Government Relations
  • Top Lawyer, Corporate Counsel Magazine
  • Martindale-Hubbell Peer Review Rating, AV Preeminent (highest rating available)
  • Fellow, American Bar Foundation
  • Fellow, Nebraska State Bar Foundation
  • Who’s Who in American Law
  • Who’s Who in American Politics
  • National Moot Court Team, University of Nebraska College of Law
  • Fellow, The Order of Barristers
  • Pi Sigma Alpha, The National Political Science Honor Society
  • Student Body President, University of Nebraska-Lincoln
  • Phi Delta Theta Fraternity Alumni Service Award

Community Involvement:

  • University of Nebraska Foundation, Trustee
  • University of Nebraska Alumni Association, Past President
  • Lincoln Community Foundation, Past Director and Secretary
  • Lincoln Public Schools Foundation, Trustee
  • Paul Harris Fellow
  • Leadership Lincoln Fellow
  • First Plymouth Congregational Church, Board of Trustees, Past Chair
  • American Red Cross, Lancaster County Chapter, Past Board Chair
  • Country Club of Lincoln, Past President
  • United Way of Lincoln and Lancaster County
    • President-Elect of the Board
    • Past Campaign Chair
    • Tocqueville Society, Past Chair