The Hordern Pavilion at the Sydney Showgrounds was built in 1924 to commemorate the Hordern family business and Hordern's long-standing role as president of the Royal Agricultural Society. Cape Hordern (originally "Hordern Island") in Antarctica was named after him by Douglas Mawson of the 1911–1914 Australasian Antarctic Expedition to honour his philanthropic support of the expedition. Hordern died age 79 on the same day as his sister, Jane, at his Darling Point residence, "Babworth House", on 3 June 1956. Following his death in 1956 the contents of Babworth House were sold at auction and the mansion was sold to a trust to become a hospital.
