Tolochenaz is a municipality in the Swiss canton of Vaud, located in the district of Morges.
Tolochenaz has an area, as of 2009, of 1.6 square kilometers (0.62 sq mi). Of this area, 0.55 km2 (0.21 sq mi) or 34.6% is used for agricultural purposes, while 0.11 km2 (0.042 sq mi) or 6.9% is forested. Of the rest of the land, 0.91 km2 (0.35 sq mi) or 57.2% is settled (buildings or roads) and 0.02 km2 (4.9 acres) or 1.3% is unproductive land.
Of the built up area, industrial buildings made up 11.3% of the total area while housing and buildings made up 25.8% and transportation infrastructure made up 15.7%. while parks, green belts and sports fields made up 3.8%. Out of the forested land, 3.8% of the total land area is heavily forested and 3.1% is covered with orchards or small clusters of trees. Of the agricultural land, 17.0% is used for growing crops and 3.1% is pastures, while 14.5% is used for orchards or vine crops.
The municipality was part of the Morges District until it was dissolved on 31 August 2006, and Tolochenaz became part of the new district of Morges.