| Judith Ish-Kishor | |
| Birth Name: | Rebecca Judith Ish-Kishor |
| Birth Date: | 25 March 1892 |
| Birth Place: | Boston, Massachusetts, United States |
| Language: | English |
| Alma Mater: | Hunter College |
| Genre: | Children's literature |
| Relatives: | Sulamith Ish-Kishor (sister) |
Rebecca Judith Ish-Kishor (25 March 1892 – 1971) was an American writer of Jewish children's historical fiction.
She was born in Boston in 1892, the daughter of Zionist leader . She was raised in London before returning to the U.S. to study at Hunter College in New York. She is best known for her works Adventure in Palestine: The Search for Aleezah (1947), Joel is the Youngest (1954), and Tales From the Wise Men of Israel (1962). She also wrote a popular column for Jewish children in the English-language Jewish press, entitled The Sabbath Angel.
Her sister, Sulamith Ish-Kishor, was also a prominent children's writer.