Clay Aiken (born Clayton Holmes Grissom on November 30, 1978) is an American pop singer who began his rise to fame on the second season of the television program American Idol in 2003. Based on album sales surpassed only by Idol winners Kelly Clarkson and Carrie Underwood, Aiken has become the most successful male and the most successful runner-up in that show's history.

In the years following his American Idol appearance Aiken has launched eight tours, authored a New York Times best-selling book Learning to Sing: Hearing the Music in Your Life with Allison Glock, and was the executive producer for a 2004 televised Christmas special, A Clay Aiken Christmas. He has been a frequent talk show guest, particularly on The Tonight Show and Jimmy Kimmel Live, appeared as a guest star on Scrubs, participated in comedy skits on Kimmel and Saturday Night Live, and made his Broadway debut playing the role of Sir Robin in Monty Python's Spamalot in January 2008.

Aiken created the Bubel/Aiken Foundation in 2003, accepted a UNICEF ambassadorship in 2004,

Aiken released a new studio album (the first album of original material since 2003's Measure of A Man), titled On My Way Here on May 6th, 2008. This is his 4th full length studio album, including a Christmas CD, and a CD of covers. He has also released one EP. On August 8, 2008, he became a father.