Douglas Taylor "Doug" Ross (21 December 1929 – 31 January 2007) was an American computer scientist pioneer, and Chairman of SofTech, Inc.
He is most famous for originating the term CAD for computer-aided design, and is considered to be the father of Automatically Programmed Tools (APT) a language to drive numerically controlled manufacturing.
His later work focused on a pseudophilosophy he developed and named Plex.