KS-1

KS1 or KS-1 may refer to:

• KS-1 (missile), a Chinese surface-to-air missile
• Raduga KS-1 Komet, a Soviet anti-ship missile
• KS-1 rifle, an assault rifle adopted by the British Armed Forces

• Kansas's 1st congressional district, to the United States House of Representatives
• K-1 (Kansas highway), an American road
• Key Stage 1, a British primary educational term