Brahmaea wallichii is a moth from the Brahmaeidae family, the Brahmin moths. It is found in the north of India, Bhutan, Myanmar, China, Taiwan and Japan.
The wingspan is about 160 mm (6.3 in).
The larvae feed on Fraxinus excelsior, Ligustrum and Common Lilac. They are able to neutralize plant toxins produced by Ligustrum.
The species is named after the botanist Nathaniel Wallich.