| Conflict: | Battle of Blanc Mont Ridge |
| Partof: | the Western Front of World War I |
| Date: | 3–27 October 1918 |
| Coordinates: | 48.7933°N 4.4392°W |
| Result: | Allied victory |
| Combatant1: |  United States |
| Commander1: | Henri Gouraud John A. Lejeune William Ruthven Smith |
| Commander2: | Crown Prince Wilhelm |
| Strength1: | French 4th Army (elements) 2 US Army divisions Assigned to French Fourth Army divisions United States Marines (elements) |
| Strength2: | 2 German infantry divisions Six additional divisions(elements) |
| Casualties1: | 7,800 men, killed and wounded. Unknown number captured |
| Casualties2: | Unknown Unknown number captured |
The Battle of Blanc Mont Ridge (3 October to 27 October 1918) occurred during World War I, northeast of Reims, in Champagne, France. The US Army's 2nd Infantry Division and the 36th Infantry Division alongside the French Fourth Army opposed the Imperial German Army's 200th and 213th divisions, along with portions of six additional German divisions.[1] The result of this battle was the expulsion of the Imperial German Army from the Champagne Region.