The old Transdev entered the Australian market in 2001 with the purchase of Shorelink in Sydney's North Shore.

Connex entered the New Zealand market in 2004 when it won the tender to operate rail services in Auckland.

As of September 2019, Transdev Australasia employed more than 5,800 people and operated 2,100 vehicles and vessels, delivering more than 150 million customer journeys each year across Australia and New Zealand.

The joint venture was formed to purchase TNT Transit Systems, the owner of the monorail and operator of the light rail.

This resulted in CGEA Transport owning the monorail as well as operating the light rail.

CGEA Transport, already renamed to Connex in 1999, sold its share of the monorail to the SLRC in early 2001.

In August 2019, Transdev began the process of acquiring Howick & Eastern Buses from the InMotion Group alongside Mana Coach Services in Wellington (see below).

In August 2019, Transdev began the process of acquiring Mana Coach Services from the InMotion Group alongside Howick & Eastern Buses in Auckland (see above).

[23] Transdev Queensland is a bus company operating services in the Redland City region of Brisbane.

[citation needed] Transdev WA operates 480 buses in Perth under contract to the Public Transport Authority.

The origins of the company that is now Transdev NSW can be traced back to February 1935 when GH Ramsay commenced a bus service between Sutherland station and Woronora River.

In November 2017, Transdev, in partnership with Transport for NSW, launched RIDE Plus on demand bus services in Sydney's Manly and Eastern Suburbs,[29][30] and Transdev Link on demand services in the Sutherland Shire.

[40] As of February 2018, Transdev Brisbane Ferries's fleet consisted of CityCats, CityHoppers and CityFerries.

In 2021, Transdev in a consortium with John Holland and CAF was shortlisted to bid for the next contract, but lost out to Auckland One Rail.