Ba River may refer to several rivers:
Ba River (Nanpan River), in China, tributary to Nanpan River
Ba River (Salween River), in China, Myanmar and Thailand, tributary to Salween River
Ba River (Fiji)
Ba River (Mull), distributary of the Loch Bà on the Isle of Mull, Scotland
Ba River (Rannoch Moor), distributary of the Loch Bà in Rannoch Moor, Grampian Mountains, Scotland
Ba River (Vietnam), the upstream part of Đà Rằng River