Rabi'a is a variant of the name Rabia, commonly used in Arabic-speaking regions. The name traces etymologically through Rabia to the Arabic root Raabi'a, which means "fourth" — a derivative of أربعة (ʾarbaʿa), meaning "four". This numerical root gives the name a sense of order and sequence, often interpreted poetically as a child completing a family. While it can be used for both genders, Rabi'a is most famously borne in history by the 8th-century female Sufi mystic Rabi'a al-Adawiyya from Basra, Iraq. She is celebrated for her teachings on divine love, representing a pioneering female voice in Islamic mysticism. Her legacy lends the name enduring spiritual and cultural significance.