Countess Elisabeth of Regenstein-Blankenburg (1542 – 20 July 1584) was Princess-Abbess of Quedlinburg.

Elisabeth was the daughter of Count Ulrich of Regenstein-Blankenburg [de], and his second wife, Magdalene of Stolberg.

[1] In 1565, with the consent of both the Holy Roman Emperor and the Pope,[2] she was elected coadjutor to Anna II, the first Protestant Abbess of Quedlinburg.

Abbess Anna II died on 4 March 1574;[3] a day after Anna II's death, Elisabeth was consecrated Princess-Abbess of Quedlinburg,[4] and as such she was also Princess of the Holy Roman Empire.

Abbess Elisabeth II hosted a theological conference in 1583, a year before her death.