R. Isaac b. Samuel Adarbi (1510?–1584?), rabbi and halakhic authority. R. Adarbi was preacher of the congregation of Lisbon Jews in Salonika and later rabbi of the Congregation Shalom, Salonika (before 1554). He was a disciple of R. Joseph Taitazak (whose novellae he published as an appendix to his own work) and was a colleague of R. Samuel b. Moses de Medina. His efforts to unite the various Salonikan communities were reflected in his Divrei Shalom (Salonika, 1580), a collection of 30 of his sermons. He appended homiletic comments to the Pentateuch. Four hundred and thirty of his responsa were published in Divrei Rivot (Salonika, 1581). These responsa show that he was a halakhist of distinction and fearless in his judgments.

הובא לדפוס על ידי אלעזר בכמ"ר שבתי בלגיד, שהוסיף את מראי המקומות לפסוקים ולמאמרים. דף קסד, א: במהלל הספר והמחבר, מאת שלמה בן שמואל בן שושאן, מתלמידי המחבר.