thumb|right|Location of the Republic of Mordovia in Russia
thumb|right|Location of Nizhny Novgorod Oblast in Russia
Ardatovsky District is the name of several administrative and municipal districts in Russia.
- Ardatovsky District, Republic of Mordovia, an administrative and municipal district of the Republic of Mordovia
- Ardatovsky District, Nizhny Novgorod Oblast, an administrative and municipal district of Nizhny Novgorod Oblast