Ainley Peak () is a prominent peak, 1,240 metres (4,070 ft) high, located 3 miles (5 km) southwest of Post Office Hill in east Ross Island. Named after David G. Ainley, Point Reyes Bird Observatory, Stinson Beach, California, a United States Antarctic Program ornithologist who studied penguin and skua populations at Cape Crozier and McMurdo Sound in six seasons, 1969–70 to 1983–84.
This article incorporates public domain material from the United States Geological Survey document "Ainley Peak" (content from the Geographic Names Information System).