The Hainan knobby newt (Tylototriton hainanensis) is a species of salamander in the family Salamandridae.

It is known from the Wuzhi Mountains, Diaoluoshan, and Jianfengling.

Nevertheless, the species is threatened by habitat loss and degradation due to agriculture, clear-cutting and infrastructure development for tourist activities.

[1] Hainan knobby newts live under dead leaves or root holes in heavily shaded forest in the mountains.

Their total length is 125–148 mm (4.9–5.8 in), males being larger than females.