Brahmaea wallichii also known as the owl moth, is a moth from the family Brahmaeidae, the Brahmin moths, and one of its largest species. It is found in the north of India, Bhutan, Myanmar, China, Taiwan and Japan. The owl moth is nocturnal. The wingspan is about 90–160 millimetres (3 1⁄2–6 1⁄4 inches).