The Type 091 (Chinese designation: 09-I; NATO reporting name: Han class) is a first generation nuclear attack submarine produced by China. They were the first nuclear-powered submarine employed by the People's Liberation Army Navy Submarine Force, and the first indigenously produced nuclear attack submarines in Asia.

The Type 092 (Chinese designation: 09-II; NATO reporting name: Xia class) submarine was the first nuclear-powered ballistic missile submarine (SSBN) deployed by the People's Liberation Army Navy Submarine Force, and the first SSBN designed and built in Asia.