The Sarawak surili,[1] Bornean banded langur,[2] or cross-marked langur[3] (Presbytis chrysomelas) is a species of primate in the family Cercopithecidae.

It is endemic to the southeast Asian island of Borneo,[1][2] where it is distributed north of the Kapuas River in Kalimantan, Indonesia, the Malaysia states of Sarawak and Sabah, and in Brunei.

Its taxonomy is complex and disputed,[4] and it has been considered a subspecies of P. femoralis or P.

[1] The Sarawak surili was formerly considered common, but has declined drastically due to persecution and habitat loss, and as of 2015 is only known from five sites with a combined population of 200–500 individuals.

[2] Consequently, it is believed to be one of the rarest primates in the world, and has been rated as critically endangered by IUCN.