The Battle of Heartbreak Ridge was a month-long battle in the Korean War which took place between September 13th and October 15th, 1951. After withdrawing from Bloody Ridge, the Korean People's Army (KPA) set up new positions just 1,500 yards (1,400 m) away on a 7-mile (11 km) long hill mass. If anything, the defenses were even more formidable here than on Bloody Ridge. The Battle of Heartbreak Ridge was one of several major engagements in the hills of North Korea a few miles north of the 38th Parallel (the pre-war boundary between North and South Korea), near Chorwon. For the Chinese, this battle is often confused with the Battle of Triangle Hill, which occurred a year later.

The battle is associated with the title and backstory of the 1986 movie Heartbreak Ridge directed by and starring Clint Eastwood. Eastwood's character is a fictional veteran of the battle at Heartbreak Ridge (as is one other character), for which he received the Medal of Honor. Although the character in the film is a Marine, the real battle was fought by US Army troops. The movie itself is a fictional account of events that took place during actual operations in Grenada.