Thommanon, Hindu temple near Victory Gate, Siem Reap, Cambodia

Thommanon is a single-towered Hindu temple with an east-facing central sanctuary crowned by a prasat. Entry from the east passes a gopura and a mandapa before reaching the sanctuary. Its compound walls are gone, leaving only the east and west entry gates, and a separate library building stands apart from the main temple.

Most scholars date Thommanon to the reign of Suryavarman II (1113–1150), when work on Angkor Wat and Beng Mealea also began, though some link its devata carvings to the late 11th century under Jayavarman VI. Under Suryavarman II the Vaishnavite cult was adopted and linga worship was absorbed into it at temples such as this one. In the 1960s the École française d'Extrême-Orient restored the temple and added concrete ceilings.

The devatas here wear flower crowns, sampots, necklaces, armbands, belts and ankle bands. Their hands form a distinctive mudra: ring and middle fingers against the thumb, index and small fingers extended, a gesture also prominent at Angkor Wat. The sampots fall into two types, an ancient pleated style seen at Lolei and Phnom Bok, and a patterned fabric style with folds and a tail seen at Angkor Wat.

The temple sits just beyond Angkor Thom's Victory Gate, making it a convenient stop for visitors already touring the main temple complex. Morning visits offer better lighting for viewing the carved details and photographing the structures.

The French School of Asian Studies restored the temple during the 1960s, resulting in better preservation than many neighboring structures in the area. This restoration work helped retain fine details of original carvings that have faded at nearby sites.