This essay entitled as "Zayd b. Zaynu'l-Abidin and Zaydiyya" examines the life, works, political and doctrinal views of Zayd b. Zaynu'l-Abidin. After that it sheds light on the formation of Zaydiyya after Zayd b. Zaynu'l-Abidin, and analyses the political and doctrinal views ancLjurisprudential principles of Zaydiyya. The article also provides essential information about the sub-groups of Zaydiyya.