阿赫图巴河是俄罗斯的河流，属于伏尔加河的左支流，河道全长537公里，平均流量每秒153立方米，在伏尔加格勒附近从伏尔加河分流而成，流往伏尔加三角洲和里海。

阿赫图巴河畔的城市有伏尔加斯基、列宁斯克、兹纳缅斯克、阿赫图宾斯克和哈拉巴利。

The Akhtuba River (Russian:А́хтуба); also transliterated Achtuba on some maps) is a left distributary of the Volga River.

The Akhtuba splits off the Volga above the city Volgograd (at 48°49′00″N 44°41′17″E / 48.8167°N 44.6880°E / 48.8167; 44.6880), and flows toward the Volga Delta and Caspian Sea. The old beginning of Akhtuba was blocked by the dam of the Volga Hydroelectric Station; now it flows from the Volga via an artificial outtake canal 6.5 kilometres (4.0 mi) long that starts below the dam. The river is 537 kilometres (334 mi) long; the average water flow is 153 cubic metres per second (5,400 cu ft/s).