Sir Emanuel (Manuel) Richard Hornibrook OBE (7 August 1893 – 30 May 1970) was an Australian builder and civil engineer.
In 1912, at the age of 19, Horninbrook with his brother Reginald established their own business, which started with building drainage channels and sewerage systems.
[2] The business quickly moved into civil engineering contracting, excavating Queensland's first open-cut coal mine at Blair Athol in 1923.
[8] One of Hornibrook's most challenging projects was building the immensely complex roof shells of the Sydney Opera House, turning architect Jorn Utzon's dream into reality.
[11][12] Hornibrook married with Methodist forms Daphne Winifred Brunckhorst (9 March 1893-30 July 1978) on 27 November 1915 at her parents' home in Enoggera.