The Selangor silvered langur (Trachypithecus selangorensis) is a species of leaf monkey found on the west coast of Peninsular Malaysia.

Roos and colleagues elevated this population to a subspecies level, Trachypithecus cristatus selangorensis, in 2008.

[8] All members of the group participate in the care of the infants, including females other than the mother and the dominant male.

[9] This langur's distribution is restricted to the west coast of Peninsular Malaysia in Johor, Negeri Sembilan, Selangor, Melaka, Perak and Kedah.

[8][10][11] At Bukit Melawati, feeding the Selangor silvered langurs is a popular tourist activity.

[12][13][14][15] The Selangor silvered langurs at Bukit Malawati are among the few wild leaf monkey populations to have experienced continual habituation to humans.

[8] A study by Lord Medway indicated that Selangor silvered langur infant births do not show a seasonal pattern[17] Besides feeding and caring for infants, the activity budget of Selangor silvered langurs includes playing, transportation, resting, vocalizing and grooming.

[3] A study by Khan published in 1978 suggested that the population in West Malaysia had declined from about 6,000 individuals to about 4,000 between 1958 and 1975.