Wenger Vieli AG

Full Service Commercial Law Firm based in Zürich and Zug.

About us

Wenger Vieli Ltd. is a nationally and internationally active law firm with offices in Zurich and Zug. For more than forty years, we have been advising and representing national and international companies as well as private clients residing in or outside Switzerland primarily in all areas of business and tax law. Providing advice on a personal level and having small teams attend to our clients allows us to respond quickly and individually to our clients’ particular needs. We advise and represent our clients in a productive, goal-oriented and efficient manner.

Wenger Vieli Ltd. employs around 60 experts who, in addition to their professional expertise, bring along the necessary team spirit and knowledge of human nature to ensure optimum cooperation with clients.

Thanks to our size, the composition of our team of experts and state-of-the-art technical infrastructure, we are able to take on national and international engagements that are both labor-intensive and sophisticated. We advise our clients in German, English, French, Italian, Spanish, Czech and Russian.

Key contact(s)

Wolfgang Zuercher

Wolfgang Zuercher

Wenger Vieli AG, Metallstrasse 9, CH-6302 Zug

T: +41 58 958 58 58

Dominique Mattmann

Dominique Mattmann

Wenger Vieli AG, Metallstrasse 9, CH-6302 Zug

T: +41 58 958 55 40

Contact details


Wenger Vieli AG, Dufourstrasse 56, CH-8034 Zürich, Switzerland

Tel: +41 58 958 58 58




Metallstrasse 9, CH-6302 Zug, Switzerland

Tel: +41 58 958 58 58




1 country

founded in

6 languages

Areas of expertise

  • Mergers & Acquisition
  • Corporate Law
  • Financial services
  • Litigation
  • Venture

Visit our website for more information: www.wengervieli.ch

What Our Clients Say

‘InterAct Law is not only a rapid expanding group of trusted international colleagues, but it is also a group of interesting people, and even a team of good friends.’

Joris Lensink

Chairman Interact Law, Partner at De Vos & Partners, The Netherlands

‘The close relations to law firms in other countries around the world are extremely helpful for our clients and our firm by having reliable and highly professional business partners.’

Christian Heimerl


‘All of our meetings are really great. Sharing experience with renowned firms of such diverse cultures is really interesting.’

Ricardo Madrona


‘If I ask for some advice, I get it in a very fast and uncomplicated manner.’

Martin Pulver


“We have found a great group of professionals, friends and people. Being part of this group is an outstanding experience”

Ricardo Chacón

C&R Mexico