The Citroën CX is an automobile produced by the French automaker Citroën from 1974 to 1991. Citroën sold nearly 1.2 million CXs during its 16 years of production. The CX was voted European Car of the Year in 1975.

It is considered by some enthusiasts as the last "real Citroën" before Peugeot took control of the company in 1976. "Real Citroën" refers to the trademark avant garde technical and design innovation, prized by marque loyalists.

Available models were a four-door fastback, a station wagon (break, or estate car), and a long-wheelbase model built on the break chassis. The CX employed Citroën's unique hydropneumatic self-leveling suspension system.