| En Name: | Ardatov |
| Ru Name: | Ардатов |
| Loc Name1: | Орданьбуе |
| Loc Lang1: | Erzya |
| Coordinates: | 54.85°N 60°W |
| Image Coa: | Coat of Arms of Ardatov (2011).png |
| Federal Subject: | Republic of Mordovia |
| Adm District Jur: | Ardatovsky District |
| Adm Selsoviet Jur: | Ardatov |
| Adm Selsoviet Type: | Town of district significance |
| Adm Ctr Of1: | Ardatovsky District |
| Adm Ctr Of2: | town of district significance of Ardatov |
| Inhabloc Cat: | Town |
| Mun District Jur: | Ardatovsky Municipal District |
| Urban Settlement Jur: | Ardatov Urban Settlement |
| Mun Admctr Of1: | Ardatovsky Municipal District |
| Mun Admctr Of2: | Ardatov Urban Settlement |
| Pop 2010Census: | 9400 |
| Established Date: | 1671 |
| Established Title: | First mentioned |
| Current Cat Date: | 1780 |
| Postal Codes: | 431860, 431861, 431899 |
| Ardatov population | |
| Label1: | 2010 Census |
| Data1: | 9,400 |
| Label2: | 2002 Census |
| Data2: | 9,587 |
| Label3: | 1989 Census |
| Data3: | 10,027 |
| Label4: | 1979 Census |
| Data4: | 9,192 |
Ardatov (ru|Арда́тов; myv|Орданьбуе, Ordańbuje) is a town and the administrative center of Ardatovsky District of the Republic of Mordovia, Russia, located on the Alatyr River 114km (71miles) northeast of Saransk, the capital of the republic. As of the 2010 Census, its population was 9,400.
It was first mentioned in 1671 as the village of Ardatovo (Russian: Арда́тово) and was granted town status in 1780.
Within the framework of administrative divisions, Ardatov serves as the administrative center of Ardatovsky District.[1] As an administrative division, it is incorporated within Ardatovsky District as the town of district significance of Ardatov. As a municipal division, the town of district significance of Ardatov is incorporated within Ardatovsky Municipal District as Ardatov Urban Settlement.[2]