Forward Operating Base Chapman, also known as Camp Chapman, was a United States Armed Forces Forward Operating Base located at the site of a former Afghan Army installation and was situated in Khost province, Afghanistan, on an airstrip 2 miles east of Khost.
The site was also used by the Central Intelligence Agency and was near Forward Operating Base Salerno, a large military base formerly used by U.S. special operations forces. The base was named for Sergeant First Class Nathan Chapman, the first U.S. soldier killed by enemy fire during the Afghanistan war, in 2002. Chapman was killed while fighting alongside the CIA.