Laconnex is a municipality of the Canton of Geneva, Switzerland.
Laconnex is first mentioned in 1225 as Laconay. In 1231 it was mentioned as Lacunay.
Laconnex has an area, as of 2009, of 3.83 square kilometers (1.48 sq mi). Of this area, 3.06 km2 (1.18 sq mi) or 79.9% is used for agricultural purposes, while 0.34 km2 (0.13 sq mi) or 8.9% is forested. Of the rest of the land, 0.4 km2 (0.15 sq mi) or 10.4% is settled (buildings or roads) and 0.03 km2 (7.4 acres) or 0.8% is unproductive land.
Of the built up area, housing and buildings made up 3.7% and transportation infrastructure made up 4.2%. Power and water infrastructure as well as other special developed areas made up 1.3% of the area while parks, green belts and sports fields made up 1.3%. Out of the forested land, 6.5% of the total land area is heavily forested and 2.3% is covered with orchards or small clusters of trees. Of the agricultural land, 67.1% is used for growing crops and 5.2% is pastures, while 7.6% is used for orchards or vine crops.