Jane Howard has been appointed as the new Chief Executive of Ulster Bank, replacing Gerry Mallon who left the lender in July.
Ms Howard was previously managing director of personal banking with Ulster Bank's British parent company Royal Bank of Scotland.
She has worked in financial services for 37 years and at executive level for 14 years across customer-facing and risk management roles.
The appointment of Ms Howard as CEO of Ulster Bank now means two of the country's three largest lenders are headed by women.
Paul Stanley had been Ulster Bank's interim chief executive prior to Ms Howard's appointment. He will now take on the role of Deputy CEO.
Commenting on the appointment, Ulster Bank Chairman Des O’Shea said: "We are delighted that Jane will join us as Chief Executive of Ulster Bank in the Republic of Ireland.
"Jane brings a track record of strong leadership, intense customer focus, drive and enthusiasm.
"Her deep banking experience gained across a variety of senior leadership roles will bring considerable value to Ulster Bank.
"The Board and I look forward to working with Jane to ensure the success of the next stage of the Bank’s development," he added.