Val Rogin Lorwin (c. 1907 – December 8, 1982) was an American civil servant, economist, and historian. He supported socialism. From the late 1940s, he was repeatedly investigated while and after he worked for the United States State Department, harassed for alleged Communist activities, named by Senator Joe McCarthy as one of more than 50 Communists at the State Department, and was cleared every time. Restored to his position and given backpay, he soon left the government to complete his doctorate at Cornell University and had an academic career. Lorwin's case gained national attention as an extreme example of abuses possible under the federal government's system of security investigations.