Responsa
Geonim
Responsa of leading rabbis and heads of talmudic academies who lived approximately in the 6th through early 11th centuries and answered questions on talmudic interpretation, practical law, and Jewish thought.
Teshuvot HaGeonim
Collection of responsa published from a manuscript discovered in Chevron in the 19th century.
Toratan shel Rishonim
Collection of responsa and a range of other geonic writings, published from manuscripts in the 19th-century.
Epistle of Rav Sherira Gaon
Influential 10th-century letter detailing the development of rabbinic literature from the Mishnah to the Geonim.
Musafia Teshuvot HaGeonim
Collection of responsa and talmudic commentary published from manuscript in the 19th century.
Rishonim
“The first ones” - leading rabbis and legal authorities who lived in the 11th through 15th centuries, whose responsa overwhelmingly focus on legal issues.
Maharach Or Zarua Responsa
13th-century responsa composed by Ashkenazi decisor Rav Chaim Eliezer, the son of the Or Zarua.
Mahari Bruna
15th-century responsa by a student of the Mahari Weil; one of the main sources quoted in the Rema’s glosses on the Shulchan Arukh.
Mahari Weil
15th-century responsa composed in Germany by a student of the Maharil, quoted often in the Rema’s glosses on the Shulchan Arukh.
Rambam
12th-century collection of responsa and public letters on topics like the world to come and heresy.
Rashba
14th-century responsa by the Rashba, a student of the Ramban, with more than 3000 decisions; quoted often in the Shulchan Arukh.
Sefer HaTashbetz
15th-century responsa of the North African R. Shimon ben Tzemach Duran, including a number of letters on math, history, and grammar
Terumat HaDeshen
15th-century responsa of the Austrian Rabbi Yisrael Isserlin, quoted often in the Rema’s glosses on the Shulchan Arukh.
Teshuvot HaRan
Responsa of renowned 14th-century Spanish scholar, Rabbenu Nissim of Gerona, addressing questions he received from a range of different places.
Teshuvot HaRashbash
15th-century responsa of Rav Shlomo Duran, son of the Tashbetz.
Teshuvot HaRi Migash
12th-century responsa of the Spanish rabbi Joseph Ibn Migash, a student of the Rif, originally composed in Arabic
Teshuvot HaRitva
13th-century responsa composed in Spain, first published in the 20th century.
Teshuvot HaRivash
14th-century responsa of Rav Isaac ben Sheshet, who lived in Spain and North Africa, quoted often in the Shulchan Arukh.
Teshuvot HaRosh
14th-century responsa composed primarily in Spain with German influences, quoted often by the author’s son, the Tur, and the Shulchan Arukh.
Teshuvot Maharam
13th-century responsa composed in Germany, with a focus on monetary issues and the suffering of German Jews under heavy taxation.
Teshuvot Maharik
15th-century responsa composed by the leading Italian rabbinic figure of the time, quoted often in the Rema’s glosses on the Shulchan Arukh.
Teshuvot Maharil
15th-century responsa composed in Germany, quoted often in the Rema’s glosses on the Shulchan Arukh.
Teshuvot Min HaShamayim
13th-century responsa recording answers that the author, a French Tosafist, received from the heavens in his dreams.
Teshuvot Rashi
11th-century responsa by the renowned French biblical and talmudic commentator Rashi, collected and published in the 20th century.
Acharonim
“The later ones” - leading rabbis and legal authorities who lived in the 16th through 20th centuries, whose responsa overwhelmingly focus on legal issues.
Admat Kodesh
Rabbi Nissim Chaim Moshe Mizrachi’s 18th-century responsa and insights on the four sections of the Shulchan Arukh.
Avkat Rokhel
16th-century responsa by R. Joseph Karo, author of the Shulchan Arukh
Be'er Sheva
17th-century responsa by Rabbi Yissachar Eilenburg.
Be'er Yitzchak
19th-century responsa by Rabbi Yitzchak Elchanan Spector, a leading rabbi in Russia.
Binyan Olam
19th-century work of responsa by Lithuanian rabbi Yitzchak Isaac Chaver
Binyan Tziyon
19th-century responsa by a leading German rabbi of the era, the author of the Arukh L’Ner.
Chakham Tzvi
17th-century responsa composed by the rabbi of the Ashkenazi community in Amsterdam, with questions from communities throughout Europe.
Chazeh Hatenufa
14th-century abridgement of selected responsa of the Rosh, compiled by his student and published in the 18th century by the Chida.
Chiddushei HaRim Responsa
19th-century responsa from Rabbi Yitzchak Meir Rotenberg-Alter, founder of the Ger chasidic dynasty.
Divrei Rivot
16th-century collection of responsa by Rabbi Yitzchak Adarbi, leading rabbi in Salonica.
HaElef Lekha Shlomo
19th-century responsa of Rav Shlomo Kluger, arranged according to the sections of the Shulchan Arukh.
Halakhot Ketanot
Compilation of questions and answers from the teachings of 17th-century scholar R. Jacob Chagiz
Havot Yair
17th-century responsa cited frequently by later authorities.
Kerakh shel Romi
19th-century treatises on questions of Jewish law that arose during the author’s time in Rome.
Mateh Levi
19th-century responsa of a leading rabbi in Frankfurt and son-in-law of the Arukh L’Ner.
Melammed Lehoil Part I
20th-century responsa of R. David Zvi Hoffmann on topics discussed in the Orach Chaim section of the Shulchan Arukh
Melammed Lehoil Part II
On topics discussed in the Yoreh De’ah section of the Shulchan Arukh, like ritual slaughter and kashrut.
Melammed Lehoil Part III
On topics discussed in the Even HaEzer (family law) and Choshen Mishpat (financial law) sections of the Shulchan Arukh.
Noda BiYehudah I
Influential 18th-century responsa of R. Yechezkel Landau, known for the primacy it grants to the Talmud as a source of law
Noda BiYehudah II
Second volume published posthumously by the author’s son, who added 60 of his own responsa
Radbaz
16th-century responsa of the chief rabbi of Egypt, with more than 2000 decisions.
Chatam Sofer
Highly influential 19th-century responsa by Rabbi Moses,Sofer, a rabbi dedicated to upholding Orthodoxy in the midst of the Enlightenment.
Maharashdam
16th-century responsa composed in Greece.
Rav Pealim
19th-century responsa of the Ben Ish Chai, composed in Baghdad.
Rema
16th-century responsa composed in Poland by the author of the glosses on the Shulchan Arukh.
Sha'agat Aryeh HaChadashot
18th-century work of halakhic discussions by R. Aryeh Leib Ginzburg, published posthumously as an additional section of his Sha’agat Aryeh
Sheilat Yaavetz
18th-century responsa of Rav Yaakov Emden, quoted often by later authorities.
Shoel uMeshiv
19th-century responsa composed in Poland, one of the first to discuss the use of timers on Shabbat.
Teshuva MeAhava Part I
19th-century responsa by a primary student of the Noda B’Yehuda.
Teshuvot Bayit Chadash
17th-century responsa of Rabbi Yoel Sirkis, also known as the Bach.
Teshuvot Maharit
17th-century responsa published posthumously by the author’s children.
Teshuvot Maharshal
16th-century responsa by the author of the Yam Shel Shlomo.
Teshuvot Meshiv Davar
19th-century collection of responsa by R. Naftali Tzvi Yehuda Berlin (Netziv)
Teshuvot Rabbi Akiva Eiger
Collection of responsa by R. Akiva Eiger, a prominent European rabbinic leader during the late-18th and early 19th centuries
Teshuvot Rabbi Akiva Eiger HaChadashot
Additional responsa by Eiger published posthumously in 1938
Teshuvot Rabbi Akiva Eiger Tinyana
Additional responsa by Eiger published posthumously in 1889
Torat Netanel
18th-century responsa composed in Germany by the author of the Korban Netanel, a commentary on the Talmud.
Modern
B'Mareh HaBazak
Responses to questions sent from all over the world to rabbis in the Eretz Hemdah Institute in Jerusalem, succinct in style but with detailed sources.
Collected Responsa in Wartime
Responsa published by a central, interdenominational chaplaincy committee in the US army addressing questions that arose during World War II.
Collected Responsa to Chaplains
Supplement to “Collected Responsa in Wartime,” published in 1953.
LaKelal VeLaPerat
Responsa compiled by the second Sephardic Chief Rabbi of the State of Israel over the course of his tenure from 1955 through 1972.
Lindenbaum Center
Growing collection of responsa from the Lindenbaum Center for Halakhic Studies at Yeshivat Chovevei Torah Rabbinical School.
Mishpetei Uziel
20th-century multivolume work of responsa of Rav Ben-Zion Uziel, the first Sephardic chief rabbi of Israel
Nishmat HaBayit
21st-century responsa relating to family purity and women’s health compiled by a team of Nishmat’s Yoatzot Halakhah.
Benei Banim
20th-century responsa of Rav Yehuda Herzl Henkin, incorporating essays on topics of Jewish thought and talmudic interpretation.
Badei HaAron; Sheviit
21st-century work on the halakhic principles of the Shemitah year by Rav Re’em HaCohen, rosh yeshiva of Yeshivat Otniel.
Teshuvot Maharsham Volume I
Early 20th-century collection of more than 2,300 responsa of R. Shalom Mordechai Schwadron
Yein HaTov
20th-century responsa by Rabbi Yitzchak Nissim, the second Sephardic chief rabbi of the State of Israel.
About Responsa
Responsa are answers and rulings written by rabbinic leaders in response to questions, ranging from post-talmudic to contemporary. They demonstrate the actualization of halakhah (Jewish law) and values in situations not explicitly addressed in legal codes and often serve as precedents for future cases.
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