The Lautertal Limes (in German also: Sibyllenspur or Sybillenspur) is a Roman limes section of the early 2nd century which is located between the River Neckar and the Swabian Jura. It extends for a distance of , running, straight as a die, from the present-day municipality of Köngen on the Neckar (Lat: Grinario) in the northwest to Donnstetten (Lat: Clarenna) in the Swabian Jura to the southeast.