Gonski, who has been ANZ chairman since 2014, would leave after finalisation of the lender's full-year results, the bank said.

O'Sullivan currently serves on the board of Australian soft-drink bottler Coca-Cola Amatil and has previously held senior roles at Singapore Telecommunications, including the chief executive of its Optus division.

(Reporting by Shashwat Awasthi in Bengaluru; Editing by Rashmi Aich)