The Geneva trolleybus system (French: Réseau trolleybus de Genève) forms part of the public transport network in Geneva, Switzerland.

It is operated by Transports publics genevois (TPG), and currently also serves the neighbouring municipalities of Bernex, Cologny, Confignon, Le Grand-Saconnex, Lancy, Meyrin, Onex and Vernier.

In 1976, the name of the operator, CGTE, was changed to Transports Publics Genevois (TPG).

Some of these exported vehicles remained in service on the Valparaíso trolleybus system for many more years, the last two being withdrawn in 2013 and 2014.

It was the first Swiss bi-articulated trolleybus and served as a prototype for the production vehicles of type BGGT-N2C.