Vanguard head of institutional business Ian Alcock is to take control of the group's Australian operation.
The move comes as incumbent Jeremy Duffield moves to a regional role as the group's new Asia-Pacific managing director.
Duffield will maintain overall responsibilities for Vanguard's Australian and Asia-Pacific operations.
International head Trevor Chudleigh will keep his responsibility for the Japan and Singapore offices.
Chief investment officer Eric Smith will also focus more on the larger region, but continues in his existing position.
Robin Bowerman is to continue as the head of Vanguards retail business
Vanguard has added Chris Stevens, as head of IT, to its senior management team. Stevens, reporting to Alcock, takes responsibility for IT strategy, infrastructure and operations services, as well as business relationship management, across Australia and Asia operations.