Frank Derek Nelson (born 9 January 1955) is a South African-born Anglican priest who served as the Dean of Adelaide from 12 October 2012 to 4 April 2021, and previously served as Dean of Wellington from 2004 to 2012.

[3] Nelson was born in what was then the Union of South Africa and grew up in East London.

[4] He worked in churches and cathedrals in South Africa, New Zealand, Hong Kong and Australia, before being invited by Archbishop Jeffrey Driver to become Dean of St Peter's Cathedral, Adelaide.

His Master of Ministry (2010) was entitled "Benedict, Balance and the Deans: The Benedictine concept of balance offers a way for a dean to survive and thrive in an Anglican cathedral today".

[6] Nelson retired from his role in Adelaide on 4 April 2021 to return to New Zealand and serve as vicar of the parish of North Wairoa (based out of Dargaville).