Elonka Dunin (; born December 29, 1958) is an American video game developer and cryptologist. Dunin worked at Simutronics Corp. in St. Louis, Missouri from 1990–2014, and in 2015 was Senior Producer at Black Gate Games in Nashville, Tennessee. She is Chairperson Emerita and one of the founders of the International Game Developers Association's Online Games group, has contributed or been editor in chief on multiple IGDA State of the Industry white papers, and was one of the Directors of the Global Game Jam from 2011–2014. As of 2020 she works as a management consultant at Accenture. Dunin has published a book of exercises on classical cryptography, and maintains cryptography-related websites about topics such as Kryptos, a sculpture at the Central Intelligence Agency containing an encrypted message, and another on the world's most famous unsolved codes. She has given several lectures on the subject of cryptography, and according to the PBS series NOVA scienceNOW she is "generally considered the leading Kryptos expert in the world." In 2010, bestselling author Dan Brown named a character, Nola Kaye, in his novel The Lost Symbol after her, in an anagram pattern.