The Beliu () is a left tributary of the river CriÃÂul Negru in Romania. Formerly a right tributary of the Teuz, its flow is now diverted by a canal towards the CriÃÂul Negru near TÃÂut, built in 1914âÂÂ1919. Its length is and its basin size is .
The following rivers are tributaries to the Beliu (from source to mouth):