He must think it’s the Wild West Wing.

Ryan Zinke made a grand entrance as newly minted interior secretary by riding a horse to work.

Wearing a cowboy hat, boots and jeans, Zinke got a mounted escort from the US Park Police as he left the National Mall, where the National Park Service has stables, to the Interior Department, USA Today reported.

More than 350 federal employees greeted him and a Bureau of Indian Affairs worker from Montana’s Northern Cheyenne tribe played a drum.

Former acting Interior Secretary Jack Haugrud also greeted the department’s new sheriff in town.

The Bureau of Safety and Environmental Enforcement, an agency in the Interior Department, tweeted a photo of its new boss — a former Navy SEAL and avid outdoorsman — to stirrup the good feelings.

“Honored to stand with the brave officers of @USParkPolice – these professionals put their lives on the line for us,” Zinke tweeted.