Shorea siamensis is a species of tree in the family Dipterocarpaceae.

It is native to most of mainland Southeast Asia.

In Cambodia, Shorea siamensis (known in Khmer as រាំងភ្នំ – Raing Phnom)[3] is rare and most often seen near Buddhist pagodas and shrines.

According to legend one of Buddha's incarnations was born under an S. siamensis tree and therefore it has a strong symbolic connection to Cambodia's Buddhist culture.

The leaves of the tree are used in traditional Cambodian medicine as a tea for easing child birth.