Launched in 1973, California Certified Organic Farmers certifies more than 1,300 crops and products. It’s also an organic trade association with more than 2,000 members.

Oregon Tilth

The nonprofit organization certifies more than 590 organic processors, 677 organic growers, five organic restaurants, and one organic retailer in the U.S.

OCIA International

The Organic Crop Improvement Association has certified organic products since 1985. Today, it carries out inspections for agricultural departments like the USDA in 20 countries, including Japan and Costa Rica.