North Wahroonga is a suburb on the Upper North Shore of Sydney, in the state of New South Wales, Australia. North Wahroonga is located 23 kilometres north-west of the Sydney central business district, in the local government area of Ku-ring-gai Council. Wahroonga is a separate suburb, to the south. North Wahroonga is bounded by the F3 Sydney-Newcastle Freeway on the west and the Ku-ring-gai Chase National Park on the north.