Unser Sandmännchen ("Our Little Sandman"), Das Sandmännchen ("The Little Sandman"), Der Abendgruß ("The Evening-Greeting"), Abendgruß ("Evening-Greeting"), Der Sandmann ("The Sandman"), Sandmann ("Sandman"), Sandmännchen ("Little Sandman") is a German children's bedtime television program using stop-motion animation. The puppet was based on the Ole Lukøje character by Hans Christian Andersen.

Two versions of Sandmännchen were created: one in East Germany (Unser Sandmännchen), and one in West Germany (Das Sandmännchen).

The series is the longest-running animated television series in history; additionally, it is the TV show with the most episodes in history.