About Us

Thomas G. Halloran Portrait

Thomas G. Halloran

Attorney At Law

Practice Focus

Mr. Halloran has been a trial lawyer for more than 35 years and has experience in all types of litigation. Presently, he focuses his litigation practice in the areas of federal civil and criminal litigation, business litigation and unfair competition claims, defense of white collar criminal cases and regulatory matters, environmental litigation and mediation/arbitration.


Juris Doctor: University of Wisconsin Law School
Bachelor of Arts with Honors: University of Wisconsin-Madison


Mr. Halloran is admitted to practice in the following venues:

  • All Wisconsin State Courts
  • Federal District Court for the Eastern District of Wisconsin
  • Federal District Court for the Western District of Wisconsin
  • Federal District Court for the Northern District of Illinois
  • Seventh District Court of Appeals
  • United States Supreme Court

Professional Associations

  • American Bar Association
  • 7th Circuit Bar Association
  • Eastern District of Wisconsin Bar Association
  • State Bar of Wisconsin
  • Milwaukee Bar Association
  • Waukesha County Bar Association



Wendy Halloran Portrait

Wendy E. Halloran

Legal Assistant

Wendy Halloran served the educational needs of the disability community for more than thirty-five years in a variety of capacities. She has been a teacher, public school administrator, educational consultant and, most recently, the Director of Education at Genesee Lake School in Oconomowoc, Wisconsin. Prior to assuming the position of Director of Education, Wendy operated her own special education consulting business, The Learning Curve of Wisconsin, Inc. In this capacity she provided specialized services to students, families and school districts.

Wendy is now applying her extensive administrative and organizational skills and experience to the effective and efficient operation of Halloran Law Offices.