Asan Invasion Beach, Historic beach in Asan, Guam

Asan Invasion Beach is a sandy coastal stretch on Guam bounded by Asan Point and Adelup Point, extending inland toward Highway 1. The shallow waters are clear and calm, with the shoreline backed by low vegetation and landscape areas that now form part of the War in the Pacific National Historical Park.

Asan's beaches were one of the landing sites when American forces retook Guam from occupying Japanese forces in the 1944 Battle of Guam. The beaches, fortifications and the water out to the reef, roughly 100 metres offshore, were listed on the National Register of Historic Places in 1979. Portions now form the Asan Beach Unit of the War in the Pacific National Historical Park.

The name comes from the Chamorro village of Asan where the landing took place. Just east of Asan Point lies Memorial Beach Park, a municipal beachfront park listed on the National Register in 1974, separate from the War in the Pacific National Historical Park unit that covers the landing beaches.

The historic site runs from Asan Point to Adelup Point and inland to Guam Highway 1, with a public access point at Asan Point; Memorial Beach Park lies just east. The designated area also takes in the water out to the reef, about 100 metres offshore. The National Park Service has recruited volunteers since 2024 to remove invasive brown tree snakes from the Asan Beach Unit.

The protected area reaches about 100 metres (330 ft) out to the reef, and at least one abandoned Allied landing vehicle lies within it. The site was listed on the National Register of Historic Places in 1979, and its waters are part of the Asan Beach Unit of the War in the Pacific National Historical Park.