Sleeper is an unincorporated community in Laclede County, Missouri, United States. It is located approximately one mile north of Interstate 44 at the intersection of Missouri routes F and J. It is and about six miles northeast of Lebanon and five miles southwest of Stoutland. Several homes and a fire station are located here. A post office called Sleeper was established in 1883, and remained in operation until 1955. The community was named after "Sleeper," a railroad employee who often was noticeably tired.