| Brewery | Location |
|---|---|
| Island Brands | |
| Island Brewing Company | Carpinteria, California |
| Islay Ales | Bridgend |
| Isle de Garde | Montréal, Canada |
| Isle of Skye Brewing Company | Isle of Skye, United Kingdom |
| Isley Brewing Company | Richmond |
| Issaquah Brewhouse | Issaquah, Washington |
| Ithaca Beer Company | Ithaca, New York |
| J. Wakefield / Late Start Brewing | |
| J. Wakefield Brewing | Florida |
| J.K.'s Scrumpy | Flushing |
| Jack Pine Brewery | Baxter, Minnesota |
| Jack Russell Brewing | Camino, California |
| Jack's Abby | Framingham, MA |
| Jack's Abby + Evil Twin Brewing |