Halleck is an unincorporated community in central Elko County, Nevada, United States.

Halleck lies at the interchange of Interstate 80 and State Route 229 northeast of the city of Elko.

The community's name originates from Camp Halleck, established July 26, 1867 (1867-1879) by the U. S. Army, to protect the California Trail and the construction workers of the Central Pacific Railroad.

But the town was slowly dying as small ranches were bought by larger properties and combined into corporate operations.

The Halleck post office continues to operate from one of the two remaining buildings in town as it serves the many local ranches.