Ronald Jamie Nutbrown (born 1981 in Christchurch, New Zealand), is a referee for Canterbury and New Zealand Rugby Union. Formerly a Half-back/Scrum Half for the Bay of Plenty Rugby Union club in New Zealand, who compete in the ITM Cup. In 2006, he was selected to play for the Chiefs until 2007 and became their second choice Half-back behind All Black Byron Kelleher. When Kelleher left for Europe, Nutbrown was set to become the Chiefs first choice Half-back, but an injury forced him to miss 2007 and the spot was filled by future All Black Brendon Leonard.