The global growth in postgraduate (PG) study since the mid-1990s has been attributed to the expansion in Masters by Coursework participation (Bekhradnia, B. (2005). Postgraduate education in the UK: Trends and challenges higher education policy institute. Paper presented at a conference "The future of postgraduate education supporting the students of today and tomorrow," London, 17 March). However, unlike at undergraduate level, research into understanding PG growth has been under-researched. This paper aims to contribute to the knowledge gap by identifying and comparing the growth in PG study in Australia, Canada, the USA and the UK. It explores the possible drivers behind the growth and concludes by highlighting potential challenges facing the future of PG study across the sector.