Declan O'Donnell is a New Zealand international rugby sevens player. He made his World Series debut in the 2010–11 season, and became an overnight sensation after he scored three tries for New Zealand during the final of the 2011 Wellington Sevens against England. O'Donnell made his Super Rugby debut for the Chiefs in 2012, but was delisted at the end of the season, and joined the Dunedin-based Highlanders in 2013.