Sumatran Tiger (Panthera Tigris Sumatrae) is a tiger subspecies native habitat on the island of Sumatra, is one of six subspecies of tigers that still survive to this day and is included in the classification of critically endangered species in the res list of threatened species released IUCN World Conservation Society.

Sumatran Tiger is the smallest tiger subspecies. The Sumatran Tiger has the darkest color among all other tiger subspecies, ranging from reddish yellow to dark orange, the black pattern width and the distance are sometimes tightly attached. Male Sumatran Tigers have an average length of 92 inches (250 cm) from head to tail with a weight of 300 pounds (140 kg), while the height of adult males can reach 60 cm. Females have an average length of 78 inches (198 cm) and weight about 200 pounds (91 kg). This subspecies also had more beard and mane than other subspecies, especially the males. There is membrane in between their fingers that made them able to swim fast.

The wild population is estimated between 400-500, mainly living in national parks in Sumatra. Recent genetic testing has revealed the generic markers unique, indicating that this subspecies may evolve into separate species, if managed sustainably. Destruction of habitat is the greatest threat to the population today. Recorded 66 tigers were killed between 1998 and 2000.