Daniel ben Jacob of Grodno (Hebrew: דניאל בן יעקב, romanized: Daniyel ben Yaʻaḳov; died April 29, 1807) was a Russian halakhist. He served as dayyan in Grodno for forty years.

He was the author of Ḥamude Daniel ('The Precious Things of Daniel'), on questions concerning the preparation of food (Grodno, 1810). His opinions are frequently mentioned in Tzvi Hirsch Eisenstadt's widely used work, Pitḥe Teshuvah, on Yoreh De'ah.

 This article incorporates text from a publication now in the public domain: Ginzberg, Louis; Berlin, Israel (1903). "Daniel ben Jacob of Grodno". In Singer, Isidore; et al. (eds.). The Jewish Encyclopedia. Vol. 4. New York: Funk & Wagnalls. p. 432.