Skver is a Chasidic dynasty founded by Rebbe Yitzchok Twersky in the city of Skver, or Skvyra, in present-day Ukraine during the mid-19th century. Adherents of the rebbes of Skver are known as Skverer Hasidim.

Chernobyl is a Hasidic dynasty that was founded by Grand Rabbi Menachem Nachum Twersky, known by the name of his work as the Meor Einayim. The dynasty is named after the northern Ukrainian town of Chernobyl, where Rabbi Nachum served as the maggid. The lineage has continued to exist to this day, although not always with the name Chernobyl. Today there are several rebbes named Chernobyl. The central court is in Bnei Brak, headed by Rabbi Menachem Nachum Twersky.