Brendan Neilson (born 5 April 1978) was a New Zealand-Japanese rugby union who played as a Centre in Japan for Coca-Cola Red Sparks., NEC Green Rockets and Kamaishi Seawaves. He studied in Japan at , then Ryutsu Keizai University. On graduation he first joined NEC Green Rockets. He has a bachelors degree in Tourism and Social Studies. In 2006, he obtained Japanese citizenship, though at international level he has yet to represent the senior Japan squad, having played for the Japan A and Under-23 sides.