Écoteaux is a former municipality in the district of Lavaux-Oron in the canton of Vaud in Switzerland. The municipalities of Bussigny-sur-Oron, Châtillens, Chesalles-sur-Oron, Écoteaux, Oron-la-Ville, Oron-le-Châtel, Palézieux, Les Tavernes, Les Thioleyres and Vuibroye merged on 1 January 2012 into the new municipality of Oron.
Écoteaux is first mentioned in 1134 as Escotaux.
Écoteaux has an area, , of . Of this area, or 77.2% is used for agricultural purposes, while or 15.2% is forested. Of the rest of the land, or 7.3% is settled (buildings or roads).
Of the built up area, housing and buildings made up 4.5% and transportation infrastructure made up 2.2%. Out of the forested land, 13.5% of the total land area is heavily forested and 1.7% is covered with orchards or small clusters of trees. Of the agricultural land, 38.8% is used for growing crops and 36.5% is pastures, while 2.0% is used for orchards or vine crops.
The municipality was part of the Oron District until it was dissolved on 31 August 2006, and Écoteaux became part of the new district of Lavaux-Oron.
The municipality is located on the border with the Canton of Fribourg in the foothills of the Alps between the Mionne river to the north and the Broye to the south. It consists of the village of Écoteaux and numerous hamlets.
The blazon of the municipal coat of arms is Or, on a double-hill Vert a Lion rampant Gules.
Écoteaux has a population () of 356. , 7.4% of the population are resident foreign nationals. Over the last 10 years (1999–2009 ) the population has changed at a rate of 3.3%. It has changed at a rate of 0.3% due to migration and at a rate of 3% due to births and deaths.
Most of the population () speaks French (307 or 92.7%), with German being second most common (16 or 4.8%) and Portuguese being third (5 or 1.5%). There are 2 people who speak Italian.
The age distribution, , in Écoteaux is; 44 children or 12.8% of the population are between 0 and 9 years old and 47 teenagers or 13.7% are between 10 and 19. Of the adult population, 22 people or 6.