Klaus Sperber (January 24, 1944 - August 6, 1983), better known as Klaus Nomi, was a German countertenor noted for his wide vocal range and an unusual, otherworldly, elven stage persona.

Nomi was known for his bizarrely theatrical live performances, heavy make-up, unusual costumes, and a highly stylized signature hairdo which flaunted a receding hairline. His songs were equally unusual, ranging from synthesizer-laden interpretations of classical music opera to covers of 1960s pop standards like Chubby Checker's "The Twist" and Lou Christie's "Lightnin' Strikes". He is perhaps best remembered by the general public as being one of David Bowie's backing singers during a 1979 performance on Saturday Night Live.

Nomi was one of the first celebrities to contract AIDS. He died in 1983 at the age of 39 as a result of complications from the disease.

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