| Mairy-sur-Marne | |
| Commune Status: | Commune |
| Arrondissement: | Châlons-en-Champagne |
| Canton: | Châlons-en-Champagne-3 |
| Insee: | 51339 |
| Postal Code: | 51240 |
| Mayor: | Catherine Pujol[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC de la Moivre à la Coole |
| Coordinates: | 48.8831°N 4.41°W |
| Elevation M: | 83 |
| Area Km2: | 20.78 |
Mairy-sur-Marne (in French pronounced as /mɛʁi syʁ maʁn/, literally Mairy on Marne) is a commune in the Marne department in north-eastern France. The village is situated on the river Marne, which travels through Chalons-en-Champagne, Épernay and on to Paris where it links on to the Seine. In the centre of the village is a church, the mayor's office and the village's 17th century Chateau.
Chateau de Mairy, also known as Chateau de Jaques, is a 'Monument Historique' set on 30 acres of grounds with its own private lake and a pigeonnerie tower which also serves as a chapel.
James II stayed regularly in the Chateau during his exile in France.
It was owned by the Loisson de Guinaumont since it was built in 1676 and was owned by the Count of Guinaumont until 2004 when he died aged 98.
It is now used as a period guest house and hosts travelers, biking groups and charming events such as weddings.