Transdev, formerly Veolia Transdev, is a France-based international private-sector company which operates public transport. It has operations in 17 countries and territories as of November 2020.

Veolia Transport was the international transport services division of the French-based multinational company Veolia until the 2011 merger that gave rise to Veolia Transdev, later renamed Transdev. Veolia Transport traded under the brand names of Veolia Transportation in North America and Israel, Veolia Transport, Veolia Verkehr in Germany and with the former name Connex preserved in Lebanon, Melbourne and Jersey.