Bengali Kayastha is a Bengali Hindu caste originated from the Bengal region of Indian subcontinent, and is one of the main subgroups of the Kayastha community. The historical caste occupation of Kayasthas throughout India has been that of scribes, administrators, ministers and record-keepers; the Kayasthas in Bengal, along with Brahmins and Baidyas, are regarded among the three traditional higher castes that comprise the "upper layer of Hindu society." During the British Raj, the Bhadraloks of Bengal were drawn primarily, but not exclusively, from these three castes, who continue to maintain a collective hegemony in West Bengal.

Kayastha or Kayasth denotes a cluster of disparate Indian communities broadly categorised by the regions of the Indian subcontinent in which they were traditionally located—the Chitraguptavanshi Kayasthas of North India, the Chandraseniya Kayastha Prabhus of Maharashtra, the Bengali Kayasthas of Bengal and Karanas of Odisha. All of them were traditionally considered "writing castes", who had historically served the ruling powers as administrators, ministers and record-keepers.