Lambayeque is a department and region in northwestern Peru known for its rich Moche and Chimú historical past. The region's name originates from the ancient pre-Inca civilization of the Lambayeque. It is the second-smallest department in Peru after Tumbes, but it is also its most densely populated department and its eighth most populous department.

The Moche civilization flourished in northern Peru with its capital near present-day Moche, Trujillo, Peru from about 100 to 700 AD during the Regional Development Epoch. While this issue is the subject of some debate, many scholars contend that the Moche were not politically organized as a monolithic empire or state. Rather, they were likely a group of autonomous polities that shared a common culture, as seen in the rich iconography and monumental architecture that survives today.