The Köln Concert is a live solo double album by pianist Keith Jarrett recorded at the Opera House in Köln, West Germany, on 24 January 1975 and released on ECM Records later that year. It is the best-selling solo album in jazz history and the best-selling piano album. In 2025, the album was deemed "culturally, historically, or aesthetically significant" by the Library of Congress and selected for preservation in the National Recording Registry.