Gehren is a town and a former independent municipality in the Ilm-Kreis district, in Thuringia, Germany.

It is situated 7 km southeast of Ilmenau.

However, since July 2018, it has been part of the town of Ilmenau.

Between 1881 and 1998, Gehren was linked to Ilmenau by a railway.

This Ilm-Kreis location article is a stub.