The 1st constituency of Fejér County (Hungarian: Fejér megyei 01. számú országgyűlési egyéni választókerület) is one of the single member constituencies of the National Assembly, the national legislature of Hungary.

The constituency standard abbreviation: Fejér 01.

[2] Since 2014, it has been represented by Tamás Vargha of the Fidesz–KDNP party alliance.

The 1st constituency is located in central part of Fejér County.

The constituency includes the following municipalities:[3][2] The constituency was first represented by Tamás Vargha of the Fidesz from 2014,[4] and he was re-elected in 2018[5] and 2022.