Vice Admiral Ian Warren Knox, AC (9 February 1933 – 14 January 2024) was a senior officer of the Royal Australian Navy (RAN).

His career culminated with his appointment as Vice Chief of the Defence Force in January 1987; a position he held until his retirement in September 1989.

From 1972 to 1973, he attended the United States Naval War College in Newport, Rhode Island, following which he was made captain and appointed commanding officer of the guided missile destroyer HMAS Hobart.

His service in this role occasioned attendance at the third through to the sixth sessions of the United Nations Law of the Sea Conference as part of the Australian delegation.

He briefly served as Deputy Chief of Naval Staff in 1984, before he was made Flag Officer Commanding HM Australian Fleet in 1985.

[1][2] Advanced to a Companion of the Order of Australia in July 1989,[7] Knox retired from the RAN that September after 42 years of service and was succeeded as VCDF by Vice Admiral Alan Beaumont.

[1][2] Knox served on the board of directors of several companies following his retirement from the RAN, including Australia Sonar Systems, Oceanic Capital Corporation and Thomson-CSF Pacific Holdings.