The Fourteenth Area Army was a field army of the Imperial Japanese Army (IJA) during World War II. It was originally the 14th Army, formed on November 6, 1941, for the upcoming invasion of the Philippines. It was reorganized in the Philippines on July 28, 1944, when Allied landings were considered imminent. The Fourteenth Area Army was formed by reinforcing and renaming the Fourteenth Army .

The Philippines campaign, also known as the Battle of the Philippines or the Fall of the Philippines, was the invasion of the American territory of the Philippines by the Empire of Japan and the defense of the islands by United States and the Philippine Armies during World War II.