"Crumblin' Down" is a rock song co-written and performed by John Mellencamp, released as the lead single from his 1983 album Uh-Huh. It was a top-ten hit on both the US Billboard Hot 100 and Canadian pop charts, and it reached #2 on the US Mainstream Rock charts.

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.