Beilstein is a village in the German municipality Greifenstein, in the state Hesse.

In December 2020, Beilstein counted 1,457 inhabitants, and its area is 10.24 km2 (3.95 sq mi).

Beilstein is located in the eastern part of the Westerwald mountain range in Hessen, near the border with Rheinland-Pfalz.

Written records of Wallendorf trace back to the year 774.

Beilstein itself was granted city rights on 18 February 1321 by the count of Nassau.