As well as English and te Reo Maori, ATMs are available in simplified Chinese, Korean and Japanese.
Westpac has added te reo Waikato as an option on its ATMs, alongside te reo Maori.
Westpac said the option to use the ATM in te reo Maori was used on average 3300 times a month.
"We're thrilled our ATM technology has allowed us to add more language options and that our partnership with Waikato-Tainui has presented the opportunity to begin adding specific regional dialects," Karen Silk, general manager of commercial, corporate and institutional banking at Westpac, said.
Westpac is talking to other iwi about introducing more language options in the future.