Bornhagen

Infobox Ort in Deutschland
image_photo =
Wappen =
lat_deg = 51 |lat_min = 20 |lat_sec = 37
lon_deg = 9 |lon_min = 56 |lon_sec = 38
Lageplan =
Bundesland = Thüringen
Landkreis = Eichsfeld
Verwaltungsgemeinschaft = Hanstein-Rusteberg
Höhe = 300
Fläche = 6.59
Einwohner = 313
Stand = 2006-12-31
PLZ = 37318
Vorwahl = 036081
Kfz = EIC
Gemeindeschlüssel = 16 0 61 014
Adresse-Verband = Steingraben 49
37318 Hohengandern
Website = [http://www.vg-hanstein-rusteberg.de/ www.vg-hanstein-rusteberg.de]
Bürgermeister = Lothar Heinemann
Partei = SPD

Bornhagen is a Thuringian municipality in the district of Eichsfeld in Germany, located at the foot of the ruins of Hanstein Castle. The town district Rimbach is positioned directly on the castle citadel at an elevation of 450 m.

Hanstein Castle was mentioned for the first time in official documents in the 9th century in Corvey Monastery, and is presently considered one of the largest castle ruins in central Germany. In the Middle Ages, the castle served as a prison. During the Thirty Years' War, it was partly destroyed by Swedish troops, after which it was no longer inhabited on a regular basis. Reconstruction work was begun on the castle in 1985 with the support of the local heritage society. The three-wing altar from the former castle chapel can be viewed in the Catholic church in Rimbach.