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Elizebeth Friedman (nee Smith, 1892-1980), US cryptologist. Born Elizebeth Smith, she married fellow US cryptologist William Friedman in 1917, having met him at Riverbank Laboratories near Chicago, where they both worked on codes and ciphers. She moved with her husband to Washington DC and worked on cracking the codes of smugglers and drug and alcohol runners during the Prohibition era. She and her husband also published 'The Shakespearean Ciphers Examined' (1957). To commemorate the Friedmans, the National Security Agency's OPS1 building was dedicated as the William and Elizebeth Friedman Building in 2002.

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