Cầu River (Vietnamese: Sông Cầu) is a river of northern Vietnam.

It flows through the provinces/cities of Bắc Kạn, Thái Nguyên, Bắc Giang, Hanoi, Bắc Ninh.

[1][2] It begins at the Phia Bioóc Peak in Chợ Đồn District, west of mountainous province of Bắc Kạn.

The river has a length of 288 km and basin area of 6,030 km².

This article related to a river in Vietnam is a stub.