Crows Nest Boys High School is a former high school located at 365 Pacific Highway in the Sydney suburb of Crows Nest, New South Wales, Australia. It was a boys' high school operated by the New South Wales Department of Education with students from years 7 to 12. The school was first established in 1883 as St Leonards North Public School. However, the school was declared surplus to the needs of the department and officially closed in 1992. The school and its heritage-listed buildings are now the campus of North Sydney Girls High School.

Crows Nest is a suburb on the lower North Shore of Sydney, New South Wales, Australia. It is also part of the North Sydney region, 5 kilometres north of the Sydney central business district, in the local government area of North Sydney Council.