Commodore Eric Eugene Johnston AO, OBE (29 July 1933 – 26 February 1997) was a Royal Australian Navy officer and the Administrator of the Northern Territory from 1 January 1981 to 1 July 1989.

During his naval career he commanded HMAS Vendetta in the Vietnam War.

[2] After Cyclone Tracy in 1974, as Naval Officer Commanding Northern Australia, he was involved in the administration of emergency naval assistance.

The Eric Johnston Lectures of the Northern Territory Library were named in his honour.

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