Nikolski Monastery, also known as the Russian Orthodox Monastery in Hemelum, is a male monastery of the Hague and Netherlands Diocese of the Russian Orthodox Church. It is located in the village of Hemelum in Friesland.

The monastery was founded in the summer of 1999 by two brothers from Friesland, hieromonks Onuphrius and Eusebius, who returned to the Netherlands from the Jabłeczna Monastery in Poland. Together with volunteers, they began the reconstruction of the building of a former Protestant church, built in 1889. The new monastery was named in honor of Saint Nicholas the Wonderworker, just like the Catholic monastery that existed in Hemelum in the 12th and 15th centuries.

On February 20, 2001, the main church of the monastery was consecrated by the Bishop of Brussels and Belgium, temporarily acting as the Hague and Netherlands Bishop, Simon (Ishunin). The relics of Saint George of Chozeba were placed under the altar of the church.