Táhirih (Ṭāhira) (Persian: طاهره, "The Pure One," also called Qurrat al-ʿAyn are both titles of Fatimah Baraghani/Umm-i Salmih, an influential poet, women's rights activist and theologian of the Bábí faith in Iran. She was one of the Letters of the Living, the first group of followers of the Báb. Her life, influence and execution made her a key figure of the religion. The daughter of Muhammad Salih Baraghani, she was born into one of the most prominent families of her time. Táhirih led a radical interpretation that, though it split the Babi community, wedded messianism with Bábism.

Bahíyyih Khánum was the only daughter of Baháʼu'lláh, the founder of the Baháʼí Faith, and Ásíyih Khánum. She was born in 1846 with the given name Fatimih Sultan, and was entitled "Varaqiy-i-'Ulyá" or "Greatest Holy Leaf". Brought up through the trying times her family lived through, in adulthood she served the interests of the religion and was even occasionally trusted with running the affairs of the religion. Greatly favoured by Bahá'u'lláh, she is seen within the Baháʼí Faith as one of the greatest women to have lived. According to Baháʼís, every dispensation has one particular holy woman or "immortal heroine". In the time of Jesus it was the Virgin Mary, the time of Muhammad it was his daughter Fatima Zahra and during the Báb's dispensation it was Táhirih. Baháʼís believe that Bahíyyih Khánum is the outstanding heroine of the Baháʼí dispensation.