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What is the Brahmaputra River called in Bangladesh?

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Map showing the course of the Brahmaputra River as it flows from southwestern China through northeastern India and into Bangladesh, with surrounding countries including Bhutan, Nepal, Myanmar, Pakistan, and Afghanistan labeled. The river's path is highlighted in blue, and major international boundaries are marked. — Brahmaputra River Brahmaputra River.

Upon entering Bangladesh, the Brahmaputra River is known as the Jamuna River.

While the main channel is referred to as the Jamuna, a smaller branch that follows the river's former course through the country is known as the Old Brahmaputra.