Phryganistria is a genus of stick insects belonging to the subfamily Clitumninae, native to northeastern South Asia, northern Mainland Southeast Asia, and southern China.

[1] The species in this genus range in size from fairly large to very large.

[2] The world's longest stick insect (which also makes it the longest known insects) is a currently undescribed species from Guangxi, China, informally referred to as Phryganistria "chinensis".

A wild collected female kept at the Insect Museum of West China was the record holder at 62.4 centimetres (24.6 in) in total length (including extended legs),[3] but it was surpassed by one of its captive bred young that reached 64 centimetres (25 in).

[4][5] The second-largest member of the genus likely is Phryganistria heusii yentuensis, with a total length of up to 52 centimetres (20 in) and a body length up to 32 centimetres (13 in).