Rear Admiral Harold Hyam Glass AO, RFD, QC (21 August 1918 – 29 March 1989) was an Australian judge and naval officer.

During his time at the University of Sydney, he shared the medal in philosophy with the eminent twentieth century philosopher John Leslie Mackie.

He joined the Royal Australian Naval Volunteer Reserve in 1942, serving aboard the cruisers Shropshire and Australia, and the American ship USS Waratah.

[3] In 1969, Glass served as Australia's leading counsel in the joint RAN-United States Navy Board of Inquiry following the collision between the Australian aircraft carrier HMAS Melbourne and the American destroyer USS Frank E.

[1] At his funeral, Rabbi Raymond Apple of the Great Synagogue, Sydney, described him as a "quintessential judge, learned lawyer, loyal Australian, faithful Jew, broadminded human being, cultured citizen of the world.