William Hamish Beith Wallace (born 25 October 1956) is a consultant paediatric oncologist at the Royal Hospital for Sick Children, Edinburgh.^[1] Since 2015, Wallace has been National Clinical Director of the Managed Service Network for Children and Young People with Cancer in Scotland.^[2]

Hamish Wallace was born in Edinburgh to William Wallace and Joan née Beith Wallace. Wallace attended firstly Gillsland Park School until the age of 11, followed by Oundle School in Northamptonshire, later graduating from St George's, University of London, University of London, in 1980.^[3] Wallace undertook his clinical training in paediatric oncology at Great Ormond Street Hospital, the University of Birmingham Medical School and the Royal Hospital for Sick Children, Edinburgh.^[3] Wallace was awarded a Leukaemia Research Fund Research Fellowship with his consultant being Stephen Shalet at the University of Manchester and the Royal Manchester Children's Hospital, in the late 1980s. It was during this period, that he developed an interest in the late endocrine effects of the treatment of childhood cancer.^[3]

In 2004, Hamish married Elizabeth Wotherspoon. They have three children, and currently reside in North Berwick.^{[citation needed]}