The Gut Hellenurme ( German Hellenorm ) was a knight's residence in Rõngu parish, Tartu County. Today the core of the estate belongs to Elva municipality in Tartu County. Hellenurme estate was first mentioned in 1641 when it belonged to the Wrangells. After the Great Northern War, the estate belonged to the Dückers and the Bruiningkis.
The estate was bought in 1850 by Theodor Johann von Middendorff. Alexander Theodor von Middendorff, a well-known scientist and academic, also lived and worked there.
The last owner of Gut Hellenurme before the expropriation was the ornithologist Ernst von Middendorff (Wikipedia).