Ruaudin (French pronunciation: [ʁɥodɛ̃]) is a commune in the department of Sarthe in the Pays de la Loire Region of north-western France.

Ruaudin is located in the canton of Écommoy and the arrondissement of Le Mans.

The town has a total surface area of 13.78 km2 (5.32 sq mi).

[5] The nearest town from Ruaudin is Mulsanne, which is just 4.8 kilometers away.

[6] Ruaudin has been twinned with the comune of Uggiate-Trevano in Italy since 2013.