Regarded By Our Peers

Recommended By People You Trust

Douglas D. Hahn

“Not only was Doug knowledgeable and had pertinent insights to share, he really got involved, which was welcome and unexpected. He went beyond legal help; taking a personal interest.”
— John Gillespie, client

Since 1981, Doug has been serving clients in the most important legal matters they encounter during their lives. In estate planning and probate, he assists clients in the planning and implementation of transferring their assets to their surviving family members, or other recipients, in a tax-efficient way. In the field of business law, he has assisted clients in establishing, purchasing and selling businesses, drafting and reviewing contracts and resolving business disputes. He conducts real estate transactions for both individuals and businesses of all types. Doug is a Shareholder in Menn Law Firm, Ltd. and was its managing partner from 2006 to 2014.  Doug has spent his entire professional career with the firm.

Admitted to Practice

State of Wisconsin
U.S. District Courts for Eastern and Western Districts of Wisconsin
U.S. Tax Court

Professional Association Memberships

American Bar Association
State Bar of Wisconsin
Fox Valley Estate Planning Council


Investment Committee of the Community Foundation for the Fox Valley Region and past board member
Past President and Board of Directors, member of the Fox Valley Estate Planning Council
Past Vice President, Board of Directors and Investment Committee of the ACES Xavier Foundation
Board of Directors, Appleton West Rotary Club
Past President and Board member of Wisconsin Timber Rattlers
First English Lutheran Church Trust Committee member


St. Norbert College, B.B.A. 1978
Marquette University Law School, J.D. 1981


“I feel a responsibility to serve each client with a focus on quality representation, efficiency, caring and frank communication. It is rewarding to be part of a law firm where, on a daily basis, we have the opportunity to help people who need our help the most—families and businesses throughout Wisconsin.”