Jacob Collins is an American realist painter working in New York City. He is a leading figure of the contemporary classical art revival.

Jacob Dinezon, also known as Yankev Dinezon, was a Yiddish author and editor from Lithuania. There are various spellings of Dinezon's name in both Yiddish and English transliteration. Early in his career, Yiddish publications spelled his name דינעזאהן (Dinezohn). Later publications removed the ה and spelled his name דינעזאן or דינעזאָן (Dinezon). In English, his name has been spelled Dienesohn, Dinesen, Dineson, Dinezon, Dinesohn, Dineszohn, Dinezohn, Dynesohn, and Dynezon.

Jacob Moiseyovych Eichenbaum, born Jacob Gelber, was a Galician Jewish maskil, educator, poet and mathematician.

Jacob Fichman also transliterated as Yakov Fichman, was an acclaimed Hebrew poet, essayist and literary critic.

Jacob Freudenthal was a German philosopher. He was born at Bodenfelde, Hanover and died at Schreiberhau.

Jacob Friedrich von Abel was a German philosopher. His main interest was the human soul and in trying to find a proof for its immortality.

Jacob Geel was a Dutch scholar, critic and librarian.

Jacob Glatstein was a Polish-born American poet and literary critic who wrote in the Yiddish language. His name is also spelled Yankev Glatshteyn or Jacob Glatshteyn.

Jacob Golomb was an Israeli philosopher. He was professor of philosophy at The Hebrew University of Jerusalem.

Jacob Michailovitch Gordin was a Russian-American playwright active in the early years of Yiddish theater. He is known for introducing realism and naturalism into Yiddish theater.