Hyalophora columbia (Columbia silkmoth or larch silkmoth) is a moth of the family Saturniidae. In the east it is found from Quebec and Ontario to Michigan, northern Wisconsin, and south-eastern Manitoba. In the west it is found from Alberta and Montana south through the Rocky Mountains to south-western Texas and into central Mexico. Glover's silkmoth, Hyalophora columbia gloveri, is sometimes considered a separate species. The wingspan is 80–100 mm. Adults are on wing from May to July. There is one generation per year.