The roneat thung or roneat thum (Khmer: រនាតធុង) is a low-pitched xylophone used in the Khmer classical music of Cambodia. It is built in the shape of a curved, rectangular shaped boat. This instrument plays an important part in the Pinpeat ensemble. The roneat Thung is placed on the left of the roneat ek, a higher-pitched xylophone. The Roneat Thung is analogous to the ranat thum of Thai.
