Mowbray House is a heritage-listed historic building that was an independent, day and boarding school for boys, located in Chatswood, on the North Shore of Sydney, New South Wales, Australia.

[13] Several notable Australians received primary education at Mowbray House School, including Norman Lethbridge Cowper in its first few years,[14] Kenneth Slessor from 1910 to 1914,[15] and Gough Whitlam in the early 1920s.

[2] As of December 2017, a planned tunnel entrance for the Sydney Metro was nearby, and the John Holland Group was preparing the building to be office space for the construction project.

[17][18] Mowbray House was built in 1906 and is a two-storey tuck pointed face brick building with a hipped tile roof and cream cement render on the upper level.

In 1957, due to public pressure, the Sydney County Council took possession of the site, and the building was dismantled and relocated stone-by-stone to 44 Beaconsfield Road, Chatswood, where it is now Holy Trinity Anglican Church.