Gillian Constance Weir DBE (born 17 January 1941) is a New Zealand organist.Gillian Weir was born in Martinborough, New Zealand in 1941. When she was 19, she was a co-winner of the Auckland Star Piano Competition, playing Mozart. A year later she won a scholarship of the Associated Board of the Royal Schools of Music in London. There, she studied with the concert pianist Cyril Smith and the renowned organist Ralph Downes, and in her second year (1964) won the prestigious St. Albans International Organ Competition.