Lausanne is a city in Switzerland. It has a population of about 140,000 people. The city is the capital of the district Lausanne. It is also the capital of the canton of Vaud. Lausanne is the fourth biggest city of Switzerland. The syndic of Lausanne (syndic is the French word for mayor in the canton of Vaud) is Grégoire Junod, from the Socialist Party, since 2016.