Abraham's Oak Holy Trinity Monastery (Russian: Троицкий монастырь и храм св. Праотцев в Хевроне) is a Russian Orthodox monastery in Hebron founded in the 20th century on the site of the ancient Oak of Mamre. The lands were acquired by the Russian Church in the 19th century and later expanded. It was held by ROCOR until 1997 when Palestinian police seized it and turned it over to ROC.