Ferdinand Lucas Parker (11 July 1885 – 1959) was a South Australian public servant, clerk of the House of Assembly.
In April 1901 he joined the State public service as a clerk in the Chief Secretary's department, and for many years handled all questions, papers, messages and reports for Parliament, gaining a good working knowledge of procedure.
He enlisted for overseas service and appointed supply officer with the rank of captain in the Second Light Horse Brigade, and left Adelaide in October 1914 with the second expeditionary force.
[2] He served at Gallipoli and was among the last to leave the Peninsula, attached to the Anzac Mounted Division in Palestine.
He was involuntarily returned to Australia in January 1916 due to some unspecified irregularities, but was not charged with any offence and received the appropriate war medals.