Zachary Robert Guildford (born 8 February 1989) is a New Zealand rugby union player who last played for French side Clermont Auvergne in the Top 14 competition. He will play for the New South Wales Waratahs in the 2016 Super Rugby season.
He previously played in Super Rugby for the Hurricanes and the Crusaders and domestic ITM Cup rugby for Hawke's Bay. He was selected for the All Blacks end of year tour in 2009 and the 2010 Steinlager Series. Guildford played for the All Blacks during the victorious 2011 Rugby World Cup.
Zac Guildford was born on 8 February 1989 in Greytown, New Zealand. He is the son of Deborah and Robert Guildford. He has one younger brother, Victor. When Zac was 10 years old his family moved to Napier, Hawke's Bay where he went through the rugby academy system. He attended Napier Boys' High School. Zac's inclusion in the New Zealand All Blacks came after a remarkable national representative career with New Zealand Secondary Schools, Under 19 and two seasons with the New Zealand Under 20.