The Appalachian Regional Reforestation Initiative (ARRI) is a coalition of groups, including citizens, the coal industry, and government dedicated to restoring forests on coal mined lands in the Eastern United States.

ARRI is a cooperative effort between OSMRE, state agencies in Alabama, Kentucky, Maryland, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia, industry partners, environmental organizations, academia, and landowners.

ARRI advocates using a technique known as the Forestry Reclamation Approach (FRA) to plant trees on coal mined lands. Highly productive forests can be created on reclaimed mine lands under existing laws and regulations by using the Forestry Reclamation Approach.

ARRI works on three categories on mine lands; Active Mining Operations, AML projects (Abandoned Mine Lands), and Legacy Sites (previously mined and reclaimed sites where reforestation opportunities exist).