Féchy is a municipality located in the district of Morges of the Swiss canton of Vaud, in Romandy, the French-speaking part of the country.
Féchy is first mentioned in 1188 as Fescheio.
Féchy has an area, as of 2009, of 2.7 square kilometers (1.0 sq mi). Of this area, 1.9 km2 (0.73 sq mi) or 70.4% is used for agricultural purposes, while 0.18 km2 (0.069 sq mi) or 6.7% is forested. Of the rest of the land, 0.62 km2 (0.24 sq mi) or 23.0% is settled (buildings or roads), 0.01 km2 (2.5 acres) or 0.4% is either rivers or lakes.
Of the built up area, housing and buildings made up 12.2% and transportation infrastructure made up 7.8%. Power and water infrastructure as well as other special developed areas made up 2.6% of the area Out of the forested land, 5.2% of the total land area is heavily forested and 1.5% is covered with orchards or small clusters of trees. Of the agricultural land, 27.8% is used for growing crops and 3.0% is pastures, while 39.6% is used for orchards or vine crops. All the water in the municipality is flowing water.