Paul Frederic Simon (born October 13, 1941) is an American singer-songwriter known for his solo work and his collaborations with Art Garfunkel. He and his school friend Garfunkel, whom he met in 1953, came to prominence in the 1960s as Simon & Garfunkel. Their blend of folk and rock, including hits such as "The Sound of Silence", "Mrs. Robinson", "America" and "The Boxer", served as a soundtrack to the counterculture movement. Their final album, Bridge over Troubled Water (1970), is among the bestselling of all time.

As a solo artist, Simon has explored genres including gospel, reggae and soul. His albums Paul Simon (1972), There Goes Rhymin' Simon (1973), and Still Crazy After All These Years (1975) kept him in the public eye and drew acclaim, producing the hits "Mother and Child Reunion", "Me and Julio Down by the Schoolyard", and "50 Ways to Leave Your Lover". Simon reunited with Garfunkel for several tours and the 1981 Concert in Central Park.

In 1986, Simon released his most successful and acclaimed album, Graceland, incorporating South African influences. "You Can Call Me Al" became one of Simon's most successful singles. Graceland was followed by The Rhythm of the Saints (1990), and a second Concert in the Park in 1991, without Garfunkel, which was attended by half a million people. In 1998, Simon wrote a Broadway musical, The Capeman, which was poorly received. In the 21st century, Simon continued to record and tour. His later albums, such as You're the One (2000), So Beautiful or So What (2011) and Stranger to Stranger (2016), introduced him to new generations. Simon retired from touring in 2018, but continued to record music. An album, Seven Psalms, was released in May 2023.

Simon has twice been inducted into the Rock and Roll Hall of Fame, and has been the recipient of sixteen Grammy Awards, including three for Album of the Year. Two of his works, Sounds of Silence and Graceland, were inducted into the National Recording Registry for their cultural significance, and in 2007, the Library of Congress voted him the inaugural winner of the Gershwin Prize for Popular Song. He is a co-founder of the Children's Health Fund, a nonprofit organization that provides medical care to children.