Hornsby railway station is a suburban railway station located at the junction of the Main Northern and North Shore lines, serving the Sydney suburb of Hornsby.

[3][4] On 1 January 1890, Hornsby became a junction station with the opening of the North Shore line to St Leonards.

[5] Hornsby was the northern extremity of the electrified network from 1930 until it was extended to Gosford in 1960.

[citation needed] As part of the CityRail Clearways Project, a fifth platform was constructed for use by through northbound trains.

[7] As Hornsby is both an originating and terminating point for some services, on 10 July 2003 the communications system in a Millennium Train failed because the train's software could not compute that the origin and destination of the service had the same name.