The Yavapai County Sheriff's Office (YCSO) is a local law enforcement agency that serves Yavapai County, Arizona.

It provides general-service law enforcement to unincorporated areas of Yavapai County, serving as the equivalent of the police for unincorporated areas of the county.

It also operates the county jail system.

The Yavapai County Sheriff's Office (YCSO) is headquartered in Prescott, Arizona.

[1] The current Sheriff is David Rhodes.