Grand Genève (English: Greater Geneva) is a local grouping of transnational cooperation [fr] (French: groupement local de coopération transfrontalière or GLCT), a public entity under Swiss law,[3] in charge of organizing cooperation within the cross-border metropolitan area of Geneva (in particular metropolitan transports).

The Grand Genève GLCT extends over Switzerland (entire Canton of Geneva and the canton of Vaud's entire Nyon District) and France (Pôle métropolitain du Genevois français  [fr], literally "Metropolitan hub of the French Genevan territory", a federation of eight French intercommunal councils in the departments of Ain and Haute-Savoie).

[5] Finally in 2012 the Projet d’agglomération franco-valdo-genevois was renamed Grand Genève ('Greater Geneva'), and the following year it was transformed into a Local Grouping of Transnational Cooperation (French: GLCT), a public entity under Swiss law, which now serves as the executive body of the Grand Genève.

[6] The territory of Grand Genève is served by various forms of public transport, including the Transports Publics Genevois network within the Canton of Geneva, the Léman Express commuter rail system, and the Compagnie Générale de Navigation sur le lac Léman boat network.

The Léman Express, a cross-border metropolitan rail network which links the suburbs of Geneva in France and in the canton of Vaud via tunnels under the city of Geneva (see CEVA rail), entered service in 2019 after more than 7 years of work and is a symbol of transnational urban cooperation in the Grand Genève territory.