Coen Jonker, who is based in Hong Kong, replaces Rob Jesudason who will commence his new role as CBA's chief financial officer from 1 July 2017 (replacing the departing David Craig).
Mr Jonker, who is currently a group executive in the bank's international financial services team, was the co-founder and chief executive of the technology company TYME which was acquired by CBA in 2015.
Commenting on Mr Jonker's appointment, CBA chief executive Ian Narev said he has "deep banking experience" and a "track record as a fintech entrepreneur".
"In his current role, he has successfully led the team that has designed, built and now operates a new model for retail banking in emerging markets," Mr Narev said.
Mr Jonker has 23 years of experience in legal, financial and professional services. He was the chief executive of African law firm Edward Nathan, and held executive positions at Nedcor Investment Bank in South Africa and later Standard Bank.
