| Macks Ølbryggeri | Tromsø |
| Maclay and Co. | Clackmannan, United Kingdom |
| Maclean's Ales Inc. | Hanover, Canada |
| Macleod Ale Brewing Co. | Van Nuys, California |
| Mad and Noisy Brewing | Canada |
| Mad Anthony Brewing | Fort Wayne, Indiana |
| MAD Beer | Copenhagen, Denmark |
| Mad Brewer/Brew Keeper | |
| Mad Crab Restaurant and Brewery | Strongsville, Ohio |
| Mad Fox Brewing Company | Falls Church |
| Mad Fritz | St. Helena |
| Mad Hatter | Liverpool, United Kingdom |
| Mad River Brewing Company | Blue Lake, California |
| Mad scientist | Budapest, Hungary |
| Mad Swede Brewing Company | Boise, Idaho |