Alchi Monastery or Alchi Gompa is a Tibetan Buddhist monastery, known more as a monastic complex (chos-'khor) of temples in Alchi village in the Leh District, under the Ladakh Autonomous Hill Development Council of the Ladakh Union Territory. The complex comprises four separate settlements in the Alchi village in the lower Ladakh region with monuments dated to different periods. Of these four hamlets, Alchi monastery is said to be the oldest and most famous. It is administered by the Likir Monastery. It is 60 west of Leh on Leh-Kargil Highway.

The Mangyu temple complex located in the village of Mangyu, Ladakh is one of the earliest in Ladakh, India. Believed to be contemporaneous to the temples at Alchi Monastery and Sumda Chun, the earliest structures are supposed to be dating to the late 12th/early 13th century but as per the oral history and local belief the temples were established by Lotsawa Rinchen Zangpo. Main temple complex comprise two early temples situated adjacent to each other and two chapels, one each on either side of the temples, that house large images of two armed and four armed Maitreya. It is on Srinagar-Leh highway 22 kilometres (14 mi) southeast of Khalsi and 22 22 kilometres (14 mi) southwest of Alchi Monastery.