Hurlstone Agricultural High School (HAHS, colloquially as Hurlstone Ag) is a government-funded co-educational academically selective and specialist secondary day and boarding school, located in Glenfield, a south-western suburb of Sydney, in the Macarthur region of New South Wales, Australia. HAHS is the oldest government boarding school in New South Wales.

Farrer Memorial Agricultural High School, Yanco Agricultural High School and Hurlstone Agricultural High School are the state's only public selective and agricultural schools that also include a co-educational boarding school. The 112-hectare (277-acre) Hurlstone Agricultural campus includes classroom blocks, an operational farm, sporting facilities and student accommodation.