Nagar River can refer to:

Bangladesh

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  • Nagar River (Rajshahi), a river beginning in Bogra District and joining the Atrai River in Natore District
  • Nagar River (Rangpur), a river that crosses the border from India in Panchagarh district and returns to India in Thakurgaon District

India

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Pakistan

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  • Hispar River (aka Nagar River), a river that joins the Hunza River in Gilgit-Baltistan