Sir Frederick John Llewellyn KCMG (29 April 1915 – 15 November 1988) was an English chemist and academic administrator who spent some of his career in New Zealand.
He attended the University of Birmingham, from where he graduated with a BSc (1st class honours).
[1][2] He was a research fellow for Imperial Chemical Industries (ICI) from 1946 to 1947.
In 1947, he moved to the University of Auckland to take the Chair in Chemistry and stayed there until 1955.
[3] In 1966, Victoria University of Wellington conferred the same honorary degree on him.