The Henry Lawson High School (abbreviated as THLHS) is a government-funded co-educational comprehensive secondary day school, located in Grenfell, a town in the Central West region of New South Wales, Australia. Established in 1965, the school enrolled approximately 160 students in 2018, from Year 7 to Year 12, of whom five percent identified as Indigenous Australians and four percent were from a language background other than English. The school is operated by the NSW Department of Education; the principal is Aaron Flagg.