Edmondson Park is a suburb of Sydney, in the state of New South Wales, Australia. Edmondson Park is located 40 kilometres south-west of the Sydney central business district, in the local government area of the City of Liverpool.
Edmondson Park was named in honour of John Edmondson, who won the first Australian Victoria Cross medal for bravery of World War II. Unfortunately, it had been awarded posthumously in 1941 as he had been killed in action.
Miss Gowan Flora MacDonald suggested the name "Edmondson" be used as a name of a suburb in the area, to honour the locally bred hero. Liverpool Council, regarding it as a fine tribute to the local war hero, offered no objection. This included the area of the present-day suburb of Denham Court, which straddled the council boundary and the support of Campbelltown was needed prior to any name change. Hostile aldermen claimed the "Parish of Denham Court" was a historic name applying to the whole area, and not just the house or farm. Council advised Liverpool that it objected.