Blastobasis millicentae is a moth in the family Blastobasidae. It is found in south-eastern Kenya and South Africa. The habitat consists of coastal lowlands. The length of the forewings is 4.1–4.5 mm. The forewings are pale brown on the basal two-thirds and brown intermixed brown scales tipped with white and pale brown scales on the distal one-third. The hindwings are pale brown. The larvae feed on Hirtella zanzibarica.