Isac Peltz (b. 12 February 1899, Bucharest - d. 10 August 1980, Bucharest) was a Romanian novelist and short story writer of Jewish origin. He was indexed during the WWII and, under the Communist regime, persecuted and emprisoned between 1951-1954. His most critically acclaimed novel is Calea Văcărești (1933). Her daughter, the painter Tia Peltz, illustrated his books.