Bill Wilson

William McLeod Wilson (17 May 1946 – 12 September 2025) was a New Zealand lawyer and judge. He was appointed to the Court of Appeal in 2007 and the Supreme Court the following year. In 2010, he became the first New Zealand judge to resign after being accused of judicial misconduct. Both of his parents were schoolteachers, and the family moved to New Plymouth, where his father was principal of Welbourn School.

Wilson was appointed as a judge on the Court of Appeal of New Zealand in early 2007.

Misconduct allegation and resignation In 2010, three complaints were made to the Judicial Conduct Commissioner Sir David Gascoigne. It was alleged that Wilson had sat as a member of the Court of Appeal in which Alan Galbraith QC was representing one of the parties. The complaints alleged that Wilson had failed to disclose the extent to which he could be seen as beholden to Galbraith. The complaints stated that while Galbraith and Wilson both equally owned an equestrian business, Galbraith had put in approximately $200,000 more into the business than Wilson had. Galbraith was also a contractual guarantor on a loan Wilson had received from the bank. Wilson opposed the view that there was a logical connection behind these arrangements and a conflict of interest; however the legal threshold for recusal is "the appearance of bias", not bias itself.

On the basis of the complaints, a preliminary investigation by the Judicial Conduct Commissioner recommended that Attorney-General Chris Finlayson establish a Judicial Conduct Panel. The Judicial Conduct Commissioner's findings were subject to a successful judicial review by Wilson in the full High Court, which found the Judicial Conduct Commissioner had made several errors in law. The Court was also troubled that Wilson had been subject to the release of the report, which is envisaged to be confidential. Wilson was the first New Zealand judge to resign after being accused of judicial misconduct.

As with other judges, Wilson ceased being able to use the title The Honourable after leaving the bench. While the convention is that former judges have the right to use that title by notice in the New Zealand Gazette, that did not occur in Wilson's case.

Lawyer Sue Grey from the original case who had originally argued Wilson had a conflict of interest, was fired from her job at Department of Conservation over her role in the case.

Later life Wilson lived in retirement at Kaiteriteri, and was affected by Parkinson's Disease in the last 15 years of his life.