It says there were also 78 live donors last year who donated a kidney or part of their liver to 78 recipients.
Overall, the number of organ transplant recipients rose to 232 last year -- the greatest number ever -- from 214 in 2014, an increase of 8 per cent.
The agency's clinical director, Dr Stephen Streat, says it has been greatly assisted by extra annual funding of $500,000 for four years, from mid-2012.
"ODNZ continues to work with health professionals in hospitals to ensure that every situation where organ donation might be possible is recognised and that donation is compassionately discussed with every such patient's family by a health professional with knowledge and skill.
"ODNZ believes that the increase in deceased organ donors has resulted from the quality programme, which the additional funding had supported, with the support and commitment of intensive care nurses and doctors throughout the country."
Number of deceased organ donors each year
•2015: 53
•2014: 46
•2013: 36
•2012: 38
•2011: 38
•2010: 41
•2009: 43
•2008: 31
•2007: 38
•2006: 25
•2005: 29
•2004: 40
•2003: 40
Source: Organ Donation New Zealand