| 4 A Ranch | Yuma | Peppers, Vegetables | | | | |
| Abbondanza Organic Seeds and Produce | Boulder | | | | | |
| Abundant Life Organic Farms | Delta | Apricots, Beans, Berries (Strawberries), Broccoli, Cherries, Corn (Sweet), Cucumbers, Lettuce, Melons (Cantaloupe), Melons (Honeydew), Melons (Watermelon), Onions, Peaches, Shallots, Spinach, Squash, Squash (Summer), Tomatoes | | | | |
| Alida's Fruits | Mesa | Fruit, Peaches, Vegetables | | | | |
| Amber Ridge Vineyards | Jefferson | | | | Wine | |
| Ames - Burgess Ranch, LLC | Montrose | Dry Heirloom Beans, Epazote , Gourds, Lemon Basil, Melons, Squash (Winter) | | | | Lemon Basil Soap |
| Anderson Meat Company | El Paso | | Buffalo, Bison | | | |
| Antelope Hill Orchards | Delta | Apples, Apricots, Cherries, Cherries, Nectarines, Peaches, Pears, Plums | | | | |
| Apple Hill Farm | Mesa | Apples | | | | Cider |
| Archer's Valley Farms | Alamosa | | Lamb | | | |
| Arlington Square Mall Farmers Market | Jefferson | | | | | |
| Arriola Sunshine Farms | Montezuma | | | | | |
| Aspen Produce LLC | Rio Grande | Potatoes | | | | |
| Aspen Saturday Market | Pitkin | | | | | |
| Aurora Farmers Market | Arapahoe | | | | | |
| Austin Family Farm | Delta | Apples, Apricots, Peaches, Pears, Plums, Vegetables | | | | Bread |
| Avanti Winery | Jefferson | | | | Wine | |
| B Bar S Ranch | Boulder | | | | | |
| Backyard Bees, LLC | Boulder | | | | | Honey |
| Bad Rabbit Farm | Delta | | | | | |
| Barker Family Farm | Pueblo | | Lamb | | | |
| Bartels Land and Livestock Inc. | Larimer | Beans, Broccoli, Cabbage, Carrots, Chile Peppers, Corn (Sweet), Cucumbers, Herbs, Melons (Cantaloupe), Melons (Honeydew) | | | | |
| Basalt Sunday Market | Eagle | | | | | |
| Bauer Organic Farms | Morgan | Melons (Watermelon), Onions, Peppers, Pumpkins, Shallots, Spinach, Squash, Squash (Summer), Tomatoes | | | | |
| Bearfoot BBQ Sauce | Jefferson | | | | | Sauces |
