第一次马恩河战役（英语：First Battle of the Marne，法语：1re Bataille de la Marne）又名马恩河奇迹（英语：Miracle of Marne）是第一次世界大战西部战线的一次战役。这场战役发生在1914年9月5日至12日。在这场战役中，英法联军合力打败了德意志帝国军。第一次马恩河战役是德军自八月的边境战役并向巴黎郊区推进以来，对法国攻势的高峰。六组法国集团军及英国远征军沿马恩河展开反击，迫使德军撒退至法国西北，导致日后的埃纳战役及「奔向大海」的行动。虽然马恩河战役对协约国是一场胜利，但亦导致长达四年的西线堑壕战。

The Battle of the Marne (French:Première bataille de la Marne, also known as the Miracle of the Marne) was a First World War battle fought from 5–12 September 1914. It resulted in an Allied victory against the German Army. The battle was the culmination of the German advance into France and pursuit of the Allied armies which followed the Battle of the Frontiers in August and had reached the eastern outskirts of Paris. A counter-attack by six French field armies and the British Expeditionary Force (BEF) along the Marne River, forced the Imperial German Army to retreat north-west, leading to the Battle of the Aisne and the "Race to the Sea". The Battle of the Marne was a victory for the Allies, but it also set the stage for four years of trench warfare stalemate on the Western Front.