John Grey Taiaroa, of Ngāi Tahu descent, was a New Zealand rugby union player. A halfback, he played nine matches for New Zealand in 1884—the warm-up in Wellington and all eight matches of the tour of New South Wales; New Zealand won all eight games. There were no test matches on the tour, as Australia did not play their first test match until 1899. Taiaroa was the highest try scorer of the tour.