Cosmopterix pulchrimella, the beautiful cosmopterix moth, is a moth of the family Cosmopterigidae. It is known from the United States (from Massachusetts and southern Wyoming south to southern Florida and southern Arizona, Michigan, New Mexico) and Canada. It is also present in the Palaearctic ecozone, where it is known from the Mediterranean region, from Portugal to the western Transcaucasus, north to Switzerland and Hungary. It has also been recorded from the Azores, the Canary Islands and Madeira. It has recently been found in southern England.