Horse Heaven is a ghost town in Jefferson County in the U.S. state of Oregon.

Mary E. Finnall, the first postmaster, received the Horse Heaven mail twice a week from Ashwood.

Homesteaders settled in the general vicinity, but most had moved away by 1946, when the post office closed.

A seasonal residential cabin as well as outbuildings and historic structures related to the mining era are nearby.

In 2005 the Oregon Department of Environmental Quality recommended remedial action involving mercury and arsenic in mine wastes at the site.