This article outlines some debates and issues in the field of Jewish linguistics and offers a research agenda for comparative analysis of Jewish languages. This agenda builds on previous research, especially on Yiddish and Judezmo ( Judeo-Spanish), but also incorporates data on the language of contemporary Jews (especially Jewish English), as well as theories and methods from variationist sociolinguistics and linguistic anthropology. Based on a new understanding of Jewish language as a distinctively Jewish repertoire rather than a separate system, this research agenda aims to provide a more nuanced and unified understanding of the phenomenon of Jewish language.