Rabbi Yitzchak Yaacov Reines | |
|---|---|
 Yitzchak Yaacov Reines | |
| Personal | |
| Born | October 27, 1839 Cheshvan 19, 5600 AM (Hebrew calendar) |
| Died | August 20, 1915 (aged 75) Elul 10, 5675 AM (Hebrew calendar) |
| Religion | Judaism |
| Children | Moses |
| Parent | Rabbi Shlomo Naftali Reines |
| Denomination | Orthodox |
| Position | Founder |
| Organization | Mizrachi |
| Semikhah | Volozhin Yeshiva |
Yitzchak Yaacov Reines (Hebrew: יצחק יעקב ריינס, Isaac Jacob Reines), (October 27, 1839 – August 20, 1915) was a Lithuanian Orthodox rabbi and the founder of the Mizrachi Religious Zionist Movement, one of the earliest movements of Religious Zionism, as well as a correspondent of Theodor Herzl.