Reporting to Kuroda, who took over as president from Todao Chino in February, Hiday will replace Rob Salamon, who retired at the beginning of this year.
On 1 July Kuroda upgraded Salamon's former job, which carried the title of principal director of external relations and reported to one of four ADB vice-presidents. Hiday lead a team of more than 60 comms staff based in Manila, Frankfurt, Washington and Tokyo.
The Frankfurt, Washington and Tokyo offices' functions, which had included business development and reported to the vice-presidents, have also been refocused more on PR and government relations and now report to the department of external relations.
Hiday said Kuroda wanted to give communications a central role in the bank's decision-making.
'At the bank's annual meeting in Istanbul in May, [the president] very unusually recognised the need at various levels of the bank to engage in better communications,' said Hiday.
Kuroda is keen to show the bank can ease Asian poverty by encouraging closer regional co-operation and integration through ADB investment and advice for public and private sector projects.
The bank invests about £3.3bn a year in the region, mainly in China and India.
In April the ADB approved its Public Communications Policy, which is designed to give greater public access to ADB documents and commits the bank to dialogue with stakeholders.