Eysins is a municipality in the district of Nyon in the canton of Vaud in Switzerland. Eysins is first mentioned around 1001-02 as Osinco. Ey…Eysins is a municipality in the district of Nyon in the canton of Vaud in Switzerland. Eysins is first mentioned around 1001-02 as Osinco. Eysins has an area, as of 2009, of 2.4 square kilometers. Of this area, 1.67 km² or 70.2% is used for agricultural purposes, while 0.19 km² or 8.0% is forested. Of the rest of the land, 0.48 km² or 20.2% is settled.