Elfrida von Nardroff was an American game show contestant on the 1950s quiz program Twenty-One.
In 1958, she won $220,500 (equivalent to $2,070,971 in 2021) on Twenty-One, more money than any other contestant on the show. Later it was revealed that there was cheating on the show and von Nardroff committed perjury in Grand Jury proceedings.
von Nardroff worked in the advertising industry from 1963 to 1980. She completed her working career as a a New York City real estate broker.
von Nardroff died November 11, 2021 in Westhampton Beach, New York. She was 96.