Lubna bint Hajar was a wife of Abdul-Muttalib and the mother of Abū Lahab.
Her father, Hajar ibn Abdmanaf ibn Datir ibn Hubashiya ibn Salul ibn Kaab ibn 'Amr, was from the Khuza'a tribe. Her mother, Hind bint 'Amr ibn Kaab ibn Saad ibn Taym ibn Murra, was from the Taym clan of the Quraysh, hence a relative of Abu Bakr. Hind's mother was Sawda bint Zuhra ibn Kilab, making Hind a first cousin of Amina bint Wahb and Lubna a second cousin of the Islamic prophet Muhammad.
By her marriage to Abdul-Muttalib, Lubna had one son, Abdul-Uzza, known as Abu Lahab ("father of flame") "because of his beauty and charm".
According to later Muslim historians, Lubna was known as al-Samajij, which could mean "ill-favoured" (ugly) or even "without any good quality".