Blastobasis glandulella is a species of moth of the Blastobasidae family. It is found in the eastern United States and southern Ontario, Canada. It has also been recorded in California. In Europe, it has been recorded from Austria, Germany, the Czech Republic, Italy, Slovakia and Croatia. It is commonly known as the acorn moth, but this can also refer to the tortrix moth Cydia splendana from Europe. The larvae feed inside acorns and chestnuts.