The Tunnel Fire was a wildfire burning in Coconino National Forest and Sunset Crater Volcano National Monument, the Lack Bill Park neighborhood north of the city of Flagstaff, Arizona in the United States, and along U.S. Route 89.

The fire was named after a tunnel landmark on Waterline Road, near where it ignited on Sunday, April 17, 2022.

[2] On June 3, 2022, the wildfire was declared 100% contained by the Arizona Emergency Information Network.

It had burned 26,532 acres (10,737 ha) and had destroyed 30 homes.

AZIEN said that, while an investigation found a "specific origin area and excluded many cause determinations", the exact cause was still unknown The fire is 100% contained as of June 3, 2022.