Sayyid Kāẓim bin Qāsim al-Ḥusaynī ar-Rashtī (Arabic: سيد كاظم بن قاسم الحسيني الرﺷتي; 1793–1843), mostly known as Siyyid Kázim Rashtí (Persian: سید کاظم رشتی), was the son of Siyyid Qasim of Rasht, a town in northern Iran.

He was a Shaykhi scholar who told his students about the coming of the Mahdi and the "Masih" (the return of Christ) and taught them how to recognize them.

[4] It also includes discussion surrounding "the curtain of the city of knowledge" and its symbolism,[5] the inception of an era of spirituality and "inward realities" as opposed to the "outward observances" and laws of the past,[6] allusions to the significance of the word Baha (Splendour/Glory),[7] as well as interpretations of Noah's Ark and the light verse.

Baháʼí sources claim that Ḥájí Mírzá Muḥammad-Karím Khán-i-Kirmání declared himself as the successor to Siyyid Káẓim.

There is disagreement over the amount of time Sayyid Mírzá ʻAlí-Muhammad stayed in Karbila' and the frequency of his attending Sayyid Káẓim's lectures; Baháʼí sources state that the Báb only occasionally attended the meetings, while sources more critical to the Baháʼí Faith state that he stayed in Karbila for a year or two and learned the Shaykhi teachings.