There is unfortunately no central database of all regenerative farmers in the world. But the resources below, when combined, represent a significant portion of them. If you search through them all I am quite confident you will be able to find regenerative farms that are near to you.
Regenerative Agriculture Facebook Group, Google Map
Permaculture Global, map of worldwide Permaculture projects
Permaculture Global, map of worldwide Permaculture people
Holistic Management International, includes most Holistic Managers who have any online presence
Permaculture Google Map (check out the “Related Maps” at the bottom for more people)
Savory Hubs (not very many, but high quality)
To find more people, farms and projects I recommend using a simple Google search.