Phyllonorycter mannii is a moth of the family Gracillariidae. It is known from France to Croatia, Hungary and Slovakia and from Bulgaria and the European part of Turkey.
Phyllonorycter mannii is treated as a synonym of Phyllonorycter distentella by many authors.
The larvae feed on Quercus pubescens and Quercus robur. They mine the leaves of their host plant.[1]