Rottenschwil is a municipality in the district of Muri in the canton of Aargau in Switzerland.

The earliest trace of a human settlement in the area around Rottenschwil, is a Roman era farm.

From 1415 until 1798, Rottenschwil was a part of the district of Muri in the Freie Ämter, which were governed as "subject lands" by all or some of the Confederates.

In 1510, Muri Abbey sold their quarter of the profits from the ferry to the city of Bremgarten.

After 1803, it was part of the Muri District in the newly formed Canton of Aargau.

In 1860, a canal between Mühlau and Hermetschwil opened up additional agricultural land for the municipality.

In 1969, the Reuss Valley Amelioration opened up more usable land, and reduced the damage that the river caused in the village.

[4] The municipality is located in the Muri district, on the left bank of the Reuss river.

The blazon of the municipal coat of arms is Azure a Pike proper in chief a Mullet Or and in base three fillets wavy Argent.

[8] The age distribution, as of 2008[update], in Rottenschwil is; 108 children or 13.1% of the population are between 0 and 9 years old and 137 teenagers or 16.6% are between 10 and 19.

[8] From the 2000 census[update], 469 or 58.2% were Roman Catholic, while 219 or 27.2% belonged to the Swiss Reformed Church.