Rhacophorus kio is a species of flying frog in the family Rhacophoridae and is found in the rainforests of southeast Asia, in countries such as China, Laos, Thailand, and Vietnam.

Prior to a 2006 study by Annemarie Ohler and Magali Delorme, R. kio and R. reinwardtii were thought to be the same species.

While the conservation status of the species is currently classified as of least concern by the IUCN Red List, R. kio faces habitat loss from deforestation to make space for agriculture and other human influences.

[4] The size of the adult frog is between 58 – 79 mm which is much larger than Rhacophorus reinwardtii, serving as a way to tell the difference between the two species.

In Vietnam, they can be found in the Gia Lai, Ha Tinh, Lao Cai, Quang Binh, and Than Hoa provinces.

[6] Even though the distribution of the species is spread across much of southeast Asia, most of the area is not favorable as hills and mountains are not good breeding locations for these frogs.

Instead, R. kio depend on undisturbed canopies, marshes, and ponds within primary rainforests which are threatened due to continued deforestation in Asia.

[6] Currently, the habitats of Rhacophorus kio face the greatest threat from deforestation due to agriculture, and are affected to a smaller degree by disturbances of breeding pools caused by pollution.

Such locations include Nam Lan Forest Conservation Area, Doi Chiang Dao Wildlife Sanctuary, Ben En National Park, and Thuong Tien Nature Reserve.

After holding the completed structure for 20 minutes, the female will leave the eggs and the aforementioned foam will eventually harden into a crust.

After the eggs turn into embryos and mature, the hatchlings will drop from the structure and into a pool where they will continue the rest of their development to adults.

R. kio also have adhesive toe pads that allow them to adhere to wet tree surfaces in the rainforest using friction.

[11] These adaptations reduce the risk of falling and may also play a role in avoiding predation and foraging for food, allowing R. kio to fill a niche in the upper canopy of the rainforest.