While the bank has yet to officially implement Apple Pay, the survey suggests support could be imminent for its "Orange Everyday" debit and credit cards.
ING Direct Australia had nearly 420,000 customers with Orange Everyday accounts open as of December 2015. Here's a list of Apple Pay banks in Australia.
Update: Apple's website now says Apple Pay is "coming soon" to ING Direct and Macquarie customers in Australia. No exact timeline was specified.