The appointment of Tan Teck Long, 51, who will join in March next year, comes at a time when the city-state's banks are expected to benefit from the easing of COVID-19 restrictions.
Long currently serves as DBS' chief risk officer, having joined Southeast Asia's largest bank in 1993 as a trainee and held roles in Singapore and China.
Wholesale banking is a key area in the bank's plan to expand in its core markets, OCBC said.
The lender earlier this year appointed Helen Wong https://www.reuters.com/article/ocbc-ceo-idUSL1N2JJ0O6 as its chief executive officer, making her the first woman to head a Singapore bank.
(Reporting by Savyata Mishra in Bengaluru, additional reporting by Nikhil Kurian Nainan; Editing by Aditya Soni)