Sambad Kaumudi, a Bengali weekly newspaper from Kolkata, was published by Ram Mohan Roy during the first half of the 19th century. It was a well-known pro-Reformist periodical that actively advocated for the Sati Pratha's removal. It was published in English and Bengali in November 1821. Raja Ram Mohan Roy was the founder and editor of two vernacular weekly newspapers, viz., Sambad Kaumudi (in Bengali) and Mir'ut'l-Akhbar (in Persian) and was also the founding member of the English newspaper "Bengal Herald".

The book "Sambad Kaumudi" by Ram Mohan Roy was significant in terms of its content and format. It introduced a new style of journalism that advocated for social reforms and religious tolerance. its impact lies in its clear and concise language, effective communication of ideas, and promotion of knowledge dissemination. It played a crucial role in the Bengal Renaissance and the advancement of progressive journalism in India.