Gilbert Grandval (born Gilbert Hirsch, subsequently Gilbert Hirsch-Ollendorff: 12 February 1904 – 29 November 1981) was a French Resistance activist who went on to become the military governor of the Saar Protectorate in 1945. He remained in post for a decade, although the nature of the job evolved and there were changes of title in 1948 and again in 1952 when he became, formally, the French ambassador to the Saarland. Subsequently, he became a government minister during the early years of the Fifth Republic.