The Luandi (simplified Chinese: 挛鞮; traditional Chinese: 攣鞮; pinyin: Luándī; Wade–Giles: Luant'i; alternatively written as Xuliandi simplified Chinese: 虚连题; traditional Chinese: 虛連題; pinyin: Xūliándí) was a clan and the ruling dynasty of the ancient Xiongnu that flourished between 3rd century BCE to 4th century CE. The form Luandi (挛鞮) comes from Hanshu, while the form Xuliandi (虚连题, pronounced Suiluandi) comes from Hou Hanshu. There were four other noble tribes: Huyan (呼衍、呼延), Suibu (須卜 Xubu), Qiulin (丘林) and Lan (蘭 Lan Hsti-pu). The Huyan belonged to the dominating left wing, and the Lan and the Suibu belonged to the right wing.
The Luandi was a clan that held some of the highest positions in the Xiongnu society, including the title of chanyu within the Xiongnu confederacy. In the confederation, Luandi was a paternal dynastic tribe, Huyan was an initially maternal dynastic tribe, and Suibu (Sui tribe, "bu" is "tribe" in Chinese) was a subsequently maternal dynastic tribe. They were the three most prominent tribes ("Houses" in N.Bichurin) in the Xiongnu.
The earliest prominent figure from the clan itself was perhaps their leader Touman (頭曼). Later on, a branch of the Luandi changed their family name to Liu (劉).