Ansonia inthanon is a species of toad in the family Bufonidae.
A small stream toad, measuring only 22-26mm in length.[2] Its natural habitat is near torrents in subtropical forest on sloping land.[3] It is threatened by habitat loss for agriculture, use by medical research (although this is not a significant threat) and by the introduced American bullfrog.[4] Though it is only known from Doi Inthanon National Park and Thongphaphum in Kanchanaburi Province,[5] it is not rare in suitable habitat. The species was recently discovered in a third locality, Doi Suthep National Park in Chiang Mai Province,[6] and may also exist in similar habitat in northern Thailand and adjacent Myanmar.