Kate Baldwin is an American actress and singer known for her work in musical theatre.

Baldwin was born in Evanston, Illinois, and graduated from Northwestern University's theatre program in 1997.

Baldwin has appeared in several Broadway productions, including her debut in The Full Monty (2000), Thoroughly Modern Millie (2002), and Wonderful Town (2003). She performs frequently in regional theater, including South Pacific as Nellie Forbush (receiving a Helen Hayes Award nomination) at Arena Stage in Washington, DC (2002); The Sound of Music as Maria (2005) and The Music Man as Marian Paroo (2009), both at The Muny, St. Louis, Missouri) and A Little Night Music as Countess Charlotte at Centre Stage, Baltimore, Maryland, in March 2008.

She played the role of Sharon in the 2009 Encores! staged concert production of Finian's Rainbow. The New York Times critic Charles Isherwood praised her performance, writing that she sang the role "beautifully... her rich, pure soprano riding the crests of the melodies with ease", most notably in the "famous wistful ballad 'How Are Things in Glocca Morra?'" and called her a "discovery". She is repeating the role as Sharon in the Broadway revial of Finian's Rainbow at the St. James Theatre beginning October 8, 2009.

Baldwin is working on her first solo album, Let's See What Happens, consisting of songs written by Burton Lane and E. Y. Harburg.

She married fellow actor Graham Rowat on October 2, 2005.

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