Wickliffe Raper Miller (January 6, 1932 – May 9, 1994) was an American linguist most well known for his work on Keresan languages and Uto-Aztecan, especially Shoshoni and Guarijio. He worked both on synchronic description and historical linguistics. His extensive unpublished field notes on Shoshoni are now being used for a language revitalization program.