The Master of Philosophy (MPhil) in Science is a higher degree by research (HDR) at AQF Level 9, designed for graduates who wish to conduct original, independent scientific investigation in a field within the natural and physical sciences. Unlike a coursework master's degree, the MPhil is primarily research-based: students work under the close supervision of an academic panel to design, execute, and report on a significant research project that makes a genuine contribution to scientific knowledge. The core deliverable is a substantial written thesis — typically between 40,000 and 60,000 words — that demonstrates critical thinking, expert disciplinary knowledge, and the capacity for independent scholarly inquiry. Specialisations commonly available across Australian providers include physics, chemistry, mathematics, earth sciences, environmental science, ecology, marine science, astronomy, materials science, and biological sciences. The degree typically takes one to two years full-time, though part-time options exist at many institutions.

The MPhil in Science is ideally suited to ambitious science graduates who want to deepen their expertise beyond an undergraduate or honours degree, aspire to a career in research or academia, or wish to use it as a stepping stone to a PhD. It also appeals to working professionals in scientific fields seeking to formalise their research skills or pivot into more senior research-oriented roles. Key employers of MPhil (Science) graduates in Australia include the Commonwealth Scientific and Industrial Research Organisation (CSIRO), the Australian Nuclear Science and Technology Organisation (ANSTO), Geoscience Australia, the Bureau of Meteorology, state and federal government science agencies, universities, Defence Science and Technology Group, and private sector industries such as mining, pharmaceuticals, environmental consulting, biotechnology, and financial services where advanced quantitative and analytical skills are in high demand.

Across Australian universities, the standard minimum entry requirement for the MPhil in Science is a bachelor's degree in a relevant discipline with a strong academic result — typically at least a Credit or Distinction average in senior-level units related to the proposed research area, or an Honours degree at Second Class Division A (equivalent to a Distinction average) or above. Some institutions also accept applicants who hold a relevant postgraduate coursework degree completed to a high standard, particularly where that degree included a substantial component of original research. In exceptional cases, applicants with significant relevant professional or research experience may be considered, subject to the discretion of the relevant head of school or faculty research committee. Applicants must also identify a suitable academic supervisor and, in many cases, submit a research proposal outlining their intended project, its significance, and its methodology. Admission is competitive and meeting minimum requirements does not guarantee a place — availability of supervisory capacity and appropriate research infrastructure also influences outcomes.

For international applicants, English language proficiency is required. Accepted tests typically include IELTS Academic (usually a minimum overall score of 6.5 to 7.0, with no band below 6.0), TOEFL iBT, PTE Academic, or Cambridge C1 Advanced. Test results are generally required to be no more than two years old at the time of course commencement. Domestic applicants from countries where English is not an official language may also need to provide evidence of proficiency. Some institutions require a current curriculum vitae, academic transcripts, referee reports from academic supervisors or employers, and a personal statement as part of the application package.