Fast Facts: Birth of the Báb
Faith(s)	Baha'i Faith
Meaning	commemorates the birth of the Báb (Sayyed `Alí Muḥammad Shírází) on October 20, 1819
Date	first day following the eighth new moon after Naw-Rúz
Dates	November 6, 2021 October 26, 2022 October 16, 2023 November 2, 2024 October 22, 2025

The Birth of the Báb is a Bahá'í holiday commemorating the birth of the Báb (Sayyed `Alí Muḥammad Shírází) on October 20, 1819. Along with the Birth of Bahá'u'lláh, it is one of the "Twin Holy Festivals" or "Twin Birthdays" of the Bahá'í Faith.

The Twin Holy Festivals were observed on the first and second days of Muḥarram in the Islamic calendar until 2014, when the Universal House of Justice decided that they should be celebrated "on the first and the second day following the occurrence of the eighth new moon after Naw-Rúz." This means they may occur in different months each year (both on the Bahá'í calendar and Gregorian calendar), but will always occur together.