Otago University says New Zealand's richest man, Graeme Hart, and his wife Robyn are giving it $10 million, the most significant donation in the university's near-150 year history.
The funding will be used to help develop a new $28.2m dental teaching facility in South Auckland.
"We are immensely grateful to Graeme and the Hart family for their generosity," said chair of the University of Otago Foundation Trust John Ward.
"This funding will make a significant contribution to the development of a new dental teaching facility which will not only provide students with diverse practical learning opportunities but will also provide dental care for the local diverse communities at a highly accessible cost," Ward said in a statement.
Hart topped National Business Review's annual rich list yet again this year with an estimated $9 billion fortune.