Dame Susan Gwynfa Mary Glazebrook is a judge of the Supreme Court of New Zealand.

The Supreme Court of New Zealand is the highest court and the court of last resort of New Zealand. It formally came into being on 1 January 2004 and sat for the first time on 1 July 2004. It replaced the right of appeal to the Judicial Committee of the Privy Council, based in London. It was created with the passing of the Supreme Court Act 2003, on 15 October 2003. At the time, the creation of the Supreme Court and the abolition of appeals to the Privy Council were controversial constitutional changes in New Zealand. The Supreme Court Act 2003 was repealed on 1 March 2017 and superseded by the Senior Courts Act 2016.