Crystal Kay Williams (born February 26, 1986 in Yokohama, Japan) is a R&B singer. She mainly uses her first two names Crystal Kay as her stage name, although she is known by many fans as "Kuri." Crystal Kay is part of the Sony Music Entertainment Japan records label.
* Although her mother is Korean, Crystal Kay does not speak Korean. She is fluent in English and Japanese. She can also speak French.
* As a native speaker of English and Japanese, Crystal Kay is often compared to Utada Hikaru.
* She is also compared to Amerie due to their similar descent (African American and Korean), although they have so far aimed for different music markets.
* American pop star Janet Jackson is Crystal Kay's most influental musical artist.
* Crystal is also Buddhist.