Lost Demos is a collection of fourteen demos and works in progress by American band Linkin Park, recorded around the sessions for their album Meteora. The material was released in 2023 as part of Meteora's twentieth-anniversary edition. The recordings present songs at an early stage, combining nu metal, rap and electronics with the dual vocals of Chester Bennington and Mike Shinoda. The first three titles, "Lost", "Fighting Myself" and "More the Victim", were finished songs that did not make the Meteora album. The collection shows how the band worked during that period.

This edition is an LP.