Sir Leslie Harold Martin, (21 December 1900 – 1 February 1983) was an Australian physicist. He was one of the 24 Founding Fellows of the Australian Academy of Science and had a significant influence on the structure of higher education in Australia as chairman of the Australian Universities Commission from 1959 until 1966. He was Professor of Physics at the University of Melbourne from 1945 to 1959, and Dean of the Faculty of Military Studies and Professor of Physics at the University of New South Wales at the Royal Military College, Duntroon, in Canberra from 1967 to 1970. He was the Defence Scientific Adviser and chairman of the Defence Research and Development Policy Committee from 1948 to 1968, and a member of the Australian Atomic Energy Commission from 1958 to 1968. In this role he was an official observer at several British nuclear weapons tests in Australia. Early life Leslie Harold Martin was born in the Melbourne suburb of Footscray on 21 December 1900, to Henry Richard Martin, a railway worker, and his wife Esther (Ettie) Emily, née Tutty. He attended Flemington State School and won a Junior State Scholarship to Melbourne High School for his final years of secondary schooling in 1917 and 1918. His mathematics teacher, Miss Julia Flynn, encouraged him, and he won a Victorian Education Department Senior Government Scholarship in 1918. He entered the University of Melbourne on the scholarship in 1919, to study for a Bachelor of Science for Education, with the intention of becoming a maths teacher. In 1921, in his final year, he came top of his year with first class honours in Natural Philosophy (physics) and was awarded the Dixson Scholarship in Natural Philosophy. In 1922, he completed his Master of Science degree, writing his master's thesis on "The emission of X Rays" under the supervision of Professor T. H. Laby. He was awarded first class honours and both the Dixson and Kernot Scholarships. Martin was awarded the Fred Knight Research Scholarship in 1923, which allowed him to continue his research with Laby. He earned extra money as a demonstrator in the Department of Natural Philosophy, and he lectured in the evenings at the Working Men's College. Laby nominated him for an 1851 Research Fellowship and a free trip to England to study physics under Ernest Rutherford at the University of Cambridge's Cavendish laboratory. Before departing, he married Gladys Maude Elaine Bull,