The Ilva (, ) is a right tributary of the river Mureș in Transylvania, Romania. It discharges into the Mureș in Lunca Bradului.Ilva (jud. Mures), e-calauza.ro Its length is and its basin size is .

Tributaries The following rivers are tributaries to the river Ilva:

Left: Ilișoara Mare, Unguraș Right: Negoiu, Pârâul Pietros, Tinul

References