William Sage Rapson (14 August 1912 – 25 June 1999) was a New Zealand and South African chemist.
He also researched coal liquefaction and collaborated with physicists at the University of Cape Town on the development of X-ray diffraction.
He was then appointed Research Advisor to the Transvaal and Orange Free State Chamber of Mines, with the aim of improving production and reducing waste.
Rapson later went on to translate Die Edelmetalle und Ihre Legierungen into English but that version was only published after his death.
[1] In 1937 Rapson married Joyce Rachel Abey, who had been permanently disabled in a motorcycle accident prior to them meeting.