Košice-Západ (literally: "Košice-West", Hungarian: Kassa-Nyugat) is a borough (city ward) of Košice, Slovakia.

Located in the Košice II district, at an altitude of roughly 243 metres (797 ft) above sea level, it is the most populous borough of the entire city.

It borders the borough of Old Town in the east, Košice-Sever in the north, Sídlisko KVP in the west, Luník IX in the southwest and Košice-Juh in the southeast.

The working title for the development was Nové Mesto ("New Town"), reflecting its proximity to the nearby Old Town, but the more popular title adopted for the new borough became Terasa ("Terrace").

The borough's housing estates built in the 1960s were dubbed "Luník", in honour of the Soviet Luna series of lunar probes.