Zuhayr ibn Janab ibn Hubal al-Kalbi was a chieftain of the Banu Kalb tribe and a pre-Islamic Arabic warrior poet. Much of his biography relies on semi-legendary accounts, but it is apparent that he lived in the early 6th century. He apparently led not only the Kalb, but the entire Quda'a tribal confederation. During his one-time alliance with the Aksumite viceroy Abraha, Zuhayr quelled a revolt by the Taghlib and Bakr tribes, capturing their chieftains, including Kulayb ibn Rabi'a. Later, he destroyed the pagan sanctuary of the Ghatafan tribe, which rivaled the Ka'aba in Mecca. Traditional Arab sources noted that Zuhayr lived an extremely long life, and finally died by suicide after he was disobeyed. His descendants, particularly those belonging to the family of Bahdal ibn Unayf, would later hold high positions under the Umayyad Caliphate.
Zuhayr's genealogy, as cited by Ibn Abd Rabbih, is Zuhayr ibn Janāb ibn Hubal ibn ʿAbd Allāh ibn Kināna. He belonged to the Banu Kalb tribe, and served as one of the group's main chieftains. According to some ancient or medieval Arab sources, Zuhayr was also the leader of the entire Quda'a confederation, which included the Bedouin tribes of Kalb, Juhayna, Bali, al-Qayn, Bahra' and Tanukh. Under Zuhayr's leadership, the Kalb also formed a close alliance with the Amilah tribe. Zuhayr is recorded as one of the muʿammarūn (centenarians) and he was noted in Arab legends for his extremely long life. According to these fables, Zuhayr lived to 450 years of age, and his grandfather Hubal lived to 650.