马里查河 (保加利亚语：Марица, 古希腊语：Ἕβρος , 土耳其语：Meriç) 是巴尔干半岛东部的一条大河。源出保加利亚西南部的里拉山脉，曲折东流，转南流经土耳其、希腊边境，注入爱琴海，河口形成沼泽化三角洲。

全长480公里；下游构成希腊和土耳其的国界；流域面积5.4万平方公里；多石滩，富水力资源；埃迪尔内以下可以通航。

The Maritsa, Meriç or Evros (Bulgarian:Марица, Maritsa; Ancient Greek: Ἕβρος, Hébros; Modern Greek:Έβρος Evros; Latin:Hebrus or Hebrus, Romanized Thracian: Evgos or Ebros; Turkish:Meriç) is, with a length of 480 km, the longest river that runs solely in the interior of the Balkans. It has its origin in the Rila Mountains in Western Bulgaria, flowing southeast between the Balkan and Rhodope Mountains, past Plovdiv and Parvomay (where the Mechka and the Kayaliyka join it) to Edirne, Turkey. East of Svilengrad, Bulgaria, the river flows eastwards, forming the border between Bulgaria (on the north bank) and Greece (on the south bank), and then between Turkey and Greece. At Edirne, the river flows through Turkish territory on both banks, then turns towards the south and forms the border between Greece on the west bank and Turkey on the east bank to the Aegean Sea. Turkey was given a small sector on the west bank opposite the city of Edirne. The river enters the Aegean Sea near Enez, where it forms a delta. The Tundzha is its chief tributary; the Arda is another one. The lower course of the Maritsa/Evros forms part of the Bulgarian-Greek border and most of the Greek-Turkish border. The upper Maritsa valley is a principal east-west route in Bulgaria. The unnavigable river is used for power production and irrigation.