Police are appealing for public help to locate a man who allegedly stole a police car in Narromine.

Police say 18-year-old Cruz Cook is wanted on an outstanding warrant for the alleged theft and other offences.

A spokesperson said Cruz is described as being of Caucasian appearance.

"175cm tall, medium build, with brown hair," the police spokesperson said.

"He is known to frequent the Nyngan, Narromine, Warren and Cobar areas.

"Anyone with information into his whereabouts is urged not to approach him but to call Triple Zero (000) immediately."

People with information can also contact Crime Stoppers on 1800 333 000.