Dadivank (Armenian: Դադիվանք) also Khutavank (Armenian: Խութավանք – Arm. Monastery on the Hill) is an Armenian monastery in the Shahumian Region of Nagorno-Karabakh. It was built between the 9th and 13th century.

According to the legend, the monastery was founded by St. Dadi who was the disciple of Thaddeus the Apostle who spread Christianity in Eastern Armenia during the first century A.C. In June, 2007, the grave of St. Dadi was discovered under the holy altar of the main church.

In the historical courses the monastery was first mentioned in the 9th century, it was also adverted by Mkhitar Gosh in the 12th century. But in the same century the monastic complex was raided and forayed. The reconstruction began in the second half of the century and was completed in the following one. There is a record on one of the walls of Dadivank, where is a reference to the reconstruction's being done in 1224. The monastic complex of Dadivank consists of the Cathedral church of St. Astvadzadzin (with Armenian writings on the wall), the chapel and other ancillary areas. On the east wall there are also exceptional commemorative cross-stones (khachkar). In the vicinity there is the three-storey steeple built in 1334 by the Bishop Sargis. Some citations about the activity of the Armenian spiritual and princely houses in Artsakh are saved in the inscriptions left in different parts of Dadivank. According to Paolo Cuneo, Dadivank and Gandzasar are among these Armenian monasteries, where bust motifs (possibly the donors of the monasteries) can be found. On 8 October 2001, Document No 9256 on the maintenance of historical and cultural heritage in the Nagorno-Karabakh Republic was signed by 16 members of the Parliamentary Assembly of the Council of Europe from Armenia, Cyprus, Italy, Romania, Greece and Russia; according to which, among the most flagrant examples of Azerbaijan's policies in Nagorno-Karabakh was the destruction of Dadivank, which "the local Muslim population (the Azerbaijanis)[1] regarded as remnants of the Armenian Christian religion and ruined the monastery as it could”( (Iskander Haji "Lel-Kala – A near and unavailable fortress, Vishka, No. 10, 16–23 March 2000") Parliamentary Assembly Documents 2002 Ordinary Session (First Part) , Volume I, Council of Europe, p. 35). In 1994 the monastery was reopened and the reconstruction process continues through the present. The Monastery belongs to the Artsakh Diocese of the Holy Armenian Apostolic Church.