Some of these have been around for quite a while, some are just getting started, and some seems to have already failed. The ones that are crossed out either closed, didn't happen or haven't done anything in years.

There are also a number of libraries interested in expanding to include “maker” tools and activities, but they are not listed because I don't know about them all. I have started to list universities with spaces, though in most cases these are only open to students and (sometimes) faculty.

• Appleton Makerspace / DHMN
• Makerspace at Lawrence University

• Beaver Dam Makerspace

• Idea Studio
• MakeBit

• Proto

• Mulberry Row

• Sector67
• The Bodgery
• University of Wisconsin Madison - College of Engineering Makerspace

• MakerPlayce

• Milwaukee Makerspace
• University of Wisconsin Milwaukee EMS Makerspace
• MIAD openlab
• Bucketworks

• The Meetupery

• Spring City Launchpad
• Just Keep Making (https://milwaukee.makerfaire.com/maker/entry/4276/)

• River City Makers

• Watertown Makerspace

• Wausau Makerspace
• Wausau Collaboration Center

• Whitewater Makerspace
• Wisconsin Makers

• Wisconsin Rapids Area Makers / MakersGuild42

You can also check out the Wisconsin page on hackerspaces.org