Eastern Yiddish
- Northeastern Yiddish ("Lithuanian" Yiddish): Lithuania, Latvia, and Belorussia
- Mideastern Yiddish ("Polish" Yiddish): Poland and parts of Hungary and Czechoslovakia
- Southeastern Yiddish ("Ukrainian" Yiddish): Ukraine, Bessarabia, and Romania
Western Yiddish
- Northwestern Yiddish: Netherlands, northern Germany
- Midwestern Yiddish: Central Germany
- Southwestern Yiddish: Alsace, Switzerland, and southern Germany
Transitional Yiddish
- Northern Transitional Yiddish: East Prussia
- Southern Transitional Yiddish: Parts of Hungary and Czechoslovakia