The Suibu (, the part bu is a Chinese for "tribe") was a maternal dynastic tribe of the Xiongnu tribal confederation (Ch. Xiongnu) that flourished between 3rd century BCE to 4th century CE. Chinese annals noted that the Suibu tribe replaced the Huyan (呼衍、呼延) tribe, which was an earlier maternal dynastic tribe of the dynastic union with the paternal dynastic tribe Luanti (挛鞮). The traditional system of conjugal unions is a form of the nomadic exogamic society. The male members of the maternal dynastic line were not eligible for the Chanyu throne, only the male members of the Luanti line, whose father was a Luanti Chanyu, and mother was a Suibu Khatun (Queen) were eligible for the supreme throne. A Suibu could only become a Chanyu after a palace coup.

The Suibu (, the part bu is a Chinese for "tribe") was a maternal dynastic tribe of the Xiongnu tribal confederation (Ch. Xiongnu) that flourished between 3rd century BCE to 4th century CE. Chinese annals noted that the Suibu tribe replaced the Huyan (呼衍、呼延) tribe, which was an earlier maternal dynastic tribe of the dynastic union with the paternal dynastic tribe Luanti (挛鞮). The traditional system of conjugal unions is a form of the nomadic exogamic society. The male members of the maternal dynastic line were not eligible for the Chanyu throne, only the male members of the Luanti line, whose father was a Luanti Chanyu, and mother was a Suibu Khatun (Queen) were eligible for the supreme throne. A Suibu could only become a Chanyu after a palace coup.