Thornleigh, New South Wales
（重定向自Thornleigh）
![](/Images/godic/202502/16/Thornleigh_station_19041745.jpg")
![Old stone sign on Lorna Pass, near the Lane Cove River](/Images/godic/202502/16/Lorna_Pass_Thornleigh1745.jpg")
Seventh_Day_Adventist_Church(Thornleigh)1745.jpg")
Thornleigh is a suburb of Sydney, in the state of New South Wales, Australia 25 kilometres (16 mi) north-west of the Sydney central business district in the local government area of Hornsby Shire. Thornleigh is bounded to the north by Waitara Creek. Thornleigh borders the suburbs of Normanhurst, Westleigh, Hornsby, Wahroonga and Pennant Hills. It is considered part of the Northern Suburbs of Sydney.