The Lanterne (French pronunciation: [lɑ̃tɛʁn] ⓘ) is a river in the east of France, a substantial left tributary of the Saône, and sub-tributary of the Rhône.

The Lanterne joins the Saône at Conflandey, just downstream of the hydrological station at Fleurey-lès-Faverney.

[2] Average monthly flow rate (m³/s) measured at the Fleurey-lès-Faverney hydrological station – data calculated from 45 years of measurements At low water, the 3-year low instantaneous flow rate can drop to 1.7 m³/s in the case of a dry five-year period.

The runoff curve number in its watershed is 687 mm annually, which is high, and results from heavy rainfall in the part of its basin within the Vosges massif.

Its specific flow rate reaches a solid 21.7 litres per second per square kilometre of basin.