| Company | Type | Founded |
|---|---|---|
| Allen-Bradley | business, public company | 1903 |
| Allis-Chalmers | business | 1901 |
| Alpha Tomo Global Resoures Sdn Bhd | business, temporary work agency, enterprise, public company | 1948 |
| Briggs & Stratton | business, public company | 1908 |
| Harley-Davidson | motorcycle manufacturer | 1903 |
| Koss Corporation | business, public company | 1953 |
| Litton Industries | business, enterprise | 1953 |
| Miller Brewing Company | brewery | 1855 |
| Northwestern Mutual | business | 1857 |
| University of Wisconsin–Milwaukee | research university, public educational institution of the United States, public university | 1885 |