The 4th constituency of Győr-Moson-Sopron County (Hungarian: Győr-Moson-Sopron megyei 04. számú országgyűlési egyéni választókerület) is one of the single member constituencies of the National Assembly, the national legislature of Hungary.

The constituency standard abbreviation: Győr-Moson-Sopron 04.

[2] Since 2018, it has been represented by Attila Barcza of the Fidesz–KDNP party alliance.

The 4th constituency is located in western part of Győr-Moson-Sopron County.

The constituency includes the following municipalities:[3][2] The constituency was first represented by Mátyás Firtl of the Fidesz from 2014 to 2018.