Vatica rassak is a tree in the family Dipterocarpaceae, native to Maritime Southeast Asia.

The specific epithet rassak is from resak, the species' Malay common name.

[3] Vatica rassak grows up to 30 metres (100 ft) tall, with a trunk diameter of up to 70 cm (28 in).

[3] In Borneo, a newly discovered, unnamed special caterpillar makes use of the poisonous resin from this tree to build a cocoon.

[4] Vatica rassak is native to Borneo, Java, the Maluku Islands, Sulawesi, New Guinea and the Philippines.