Sir John Joseph McGrath KNZM QC (10 March 1945 – 19 October 2018) was a judge of the Supreme Court of New Zealand, serving in that role from 2005 until 2015.
Born in Wellington, McGrath attended Wanganui Collegiate School and graduated with an LL.M.
He was a partner in Buddle Findlay, in Wellington, until he moved to the separate bar in 1984.
[2] In the 2007 New Year Honours, he was appointed a Distinguished Companion of the New Zealand Order of Merit, for services to the Appeal and Supreme Courts.
[3] In 2009, following the re-introduction of titular honours by the New Zealand government, McGrath accepted redesignation as a Knight Companion of the New Zealand Order of Merit.