'''Sa'adiah ben Yosef [[Geonim|Gaon]]''' ({{lang-ar|سعيد بن يوسف الفيومي}} / ''Saʻīd bin Yūsuf al-Fayyūmi'', '' Sa'id ibn Yusuf al-Dilasi, Saadia ben Yosef aluf, Sa'id ben Yusuf ra's al-Kull'';<ref>{{Cite book |title=Jews in Islamic countries in the Middle Ages |first=Moshe |last=Gil |lastauthoramp=yes |first2=David |last2=Strassler |location=Leiden |publisher=Brill |year=2004 |page=348 |isbn=90-04-13882-X |ref=harv |postscript=<!-- Bot inserted parameter. Either remove it; or change its value to "." for the cite to end in a ".", as necessary. --> }}.</ref> {{lang-he-n|רבי סעדיה בן יוסף אלפיומי גאון'}}; nama Inggris alternatif: '''Rabbeinu Sa'adiah Gaon''' (" Rabi kami, Saadia Gaon"), seringkalisering kali disingkat '''RSG''' ('''R<sup>a</sup>S<sup>a</sup>G'''), '''Saadia b. Joseph''',<ref>[http://www.jewishencyclopedia.com/view.jsp?artid=4&letter=S SAADIA B. JOSEPH (Sa'id al-Fayyumi)], jewishencyclopedia.com; Article</ref> '''Saadia ben Joseph''' atau '''Saadia ben Joseph dari Faym''' atau '''Saadia ben Joseph Al-Fayyumi'''; (882/892 – 942)<ref>The traditional birth year of 892 was exclusively cited before 1921 and is still occasionally cited. It rests on a statement by the twelfth-century historian [[Abraham ibn Daud]] that Saadia was "about fifty" years old when he died. The modern birth year of 882 rests on an 1113 CE [[Genizah]] fragment containing a list of Saadia's writings compiled by his sons eleven years after his death, which stated that he was "sixty years less forty ... days" at death. [[Henry Malter]], "[https://books.google.com/books?vid=OCLC01306323&id=dPvPHCm6ZyYC&pg=RA4-PA421 Postscript]", ''Saadia Gaon: His life and works'' (1921) 421–428. Jacob [Jocob] Mann, "[https://www.jstor.org/stable/1451198 A fihrist of Sa'adya's works]", ''The Jewish Quarterly Review'' new series '''11''' (1921) 423-428. Malter rejected 882 because it was in conflict with other known events in Saadia's life. He suspected an error by a copyist. The year 882 is now generally accepted because its source is closer in both time and space to his death. Abraham Firkovich had previously held the opinion that Saadia Gaon was born in 862, based on the view that he was aged twenty when he first began writing his ''Sefer Ha-Iggaron'' in 882 (See: Abraham Firkovich, Hebrew Newspaper ''Hamelitz'' - 1868, Issue 26–27)</ref><ref>Bar Ilan CD-ROM</ref> adalah seorang [[rabi]], filsuf [[Yahudi]], dan pakar zaman [[Geonim|Geonik]] yang aktif di [[Kekhalifahan Abbasiyah]]. Sebagai figur rabinik penting pertama yang giat menulis dalam [[bahasa Arab]], ia dianggap sebagai pendiri sastra [[Yudeo-Arab]].<ref name=Scheindlinp80>{{cite book|title=A Short History of the Jewish People: From Legendary Times to Modern Statehood|first1=Raymond P.|last1=Scheindlin|edition=Illustrated|publisher=Oxford University Press US|year=2000|isbn=9780195139419|url=https://books.google.com/?id=bfsuicMmrE0C&pg=PA80&dq=saadia+arabic+jewish#v=onepage&q=saadia%20arabic%20jewish|page=80.}}</ref> Dikenal atas karyanya tentang [[bahasa Ibrani|linguistik Ibrani]], [[Halakha]], dan [[filsafat Yahudi]], ia adalah salah satu praktisioner paling menonjol dari mazhab filsafat yang disebut sebagai "[[Kalam Yahudi]]" {{Harv|Stroumsa|2003}}.
