Inchon (also stylized as Inchon!) is a 1981 war film about the Battle of Inchon, considered to be the turning point of the Korean War. Directed by Terence Young and financed by Unification movement founder Sun Myung Moon, the film stars Laurence Olivier as General Douglas MacArthur, who led the United States' surprise amphibious landing at Incheon, South Korea in 1950, with Jacqueline Bisset, Ben Gazzara, Toshiro Mifune and Richard Roundtree.

Inchon's plot includes both military action and human drama. Characters face danger and are involved in various personal and dramatic situations. The film concludes with the American victory over North Korean forces in the Battle of Inchon, which is considered to have saved South Korea. Produced on $46 million with filming taking place in South Korea, California, Italy, Ireland and Japan, it encountered many problems during production, including a typhoon and the death of a cast member. Both the Unification movement and the United States military provided personnel as extras during the filming.

After premiering in May 1981, the film was released theatrically in the United States and Canada in September 1982, before being quickly withdrawn due to critical and financial failure. Never receiving a home video release, it has occasionally been broadcast on television. It was the largest financial loss in film of 1982, earning less than $2 million against its lofty budget and resulting in losses of around $41 million. Reviewers at the time gave it consistently negative reviews and later commentators including Newsweek, TV Guide and Canadian Press have classed Inchon among the worst films of all time.