Gordon David Plotkin (1946-) is a Scottish theoretical computer scientist. Plotkin's work has influenced virtually every aspect of programming language theory and semantics.
After retiring from a professorship at the University of Edinburgh, Plotkin moved to California and took up a position as a researcher at Google.
Personal publications page at the University of Edinburgh (slightly out-of-date at the time of writing, but impressively complete up to 2016/2017).