"Jack & Diane" is a song written and performed by American singer-songwriter John Mellencamp, then performing as "John Cougar." Described by critics as a "love ballad", this song was released as the second single from Mellencamp's 1982 album American Fool, and was chosen by the Recording Industry Association of America (RIAA) as one of the Songs of the Century. It spent four weeks at number one on the Billboard Hot 100 in 1982 and is Mellencamp's most successful hit single.

John J. Mellencamp, previously known as Johnny Cougar, John Cougar, and John Cougar Mellencamp, is an American singer-songwriter. He is known for his catchy brand of heartland rock, which emphasizes traditional instrumentation. He was inducted into the Rock and Roll Hall of Fame in 2008, followed by an induction into the Songwriters Hall of Fame in 2018.