The Aita River is a right tributary of the river Olt in Romania. It discharges into the Olt in Aita Mare.
The Arpaș River is a left tributary of the river Olt in Romania. It discharges into the Olt in Arpașu de Jos. It starts at the confluence of two headwaters Arpașul Mare and Podragu
The Iminog River is a left tributary of the river Olt in Romania. It discharges into the Olt in Mărunței.
The Cungrea Mică River or Cungrișoara River is a tributary of the Olt River in Romania.
The Cungrea River or Cungra River is a left tributary of the river Olt in Romania. It discharges into the Olt near Dobroteasa.
The Ormeniș River is a left tributary of the river Olt in Romania. It discharges into the Olt in Ormeniș.
The Valea Roșie River is a left tributary of the river Olt in Romania. It discharges into the Olt near Bixad.
The Redea River or Pârliți River or Valea Redea River is a tributary of the Vlădila River in Romania.
The Dârjov River is a left tributary of the river Olt in Romania. It discharges into the Olt in Ipotești.
The Crușov River is a tributary of the Olt River in Romania.
The Oltișor River is a tributary of the Dascălu River in Romania. The upper reach of the river is also known as Criva River
The Homorod River is a tributary of the Olt River in Romania. It is formed at the confluence of the headwaters of Homorodul Mare and Homorodul Mic, in the village Homorod. It discharges into the Olt in Ungra.
The Teslui River is a right tributary of the river Olt in Romania. It discharges into the Olt in Fărcașele.
The Gologan River or Mărioara River or Caracal River is a tributary of the Olt River in Romania.
The Beica River is a tributary of the river Olt in Romania. It joins the Olt through the Oporelu Canal.
The Valea Mare River is a tributary of the Olt River in Romania.
The Dâlga River is a tributary of the Olt River in Romania. It joins the Olt River through the Oporelu Canal
The Oporelu Canal is an artificial canal built along the right bank dyke of the Arcești Lake on the Olt River in Romania. Its role is to intercept the right bank tributaries of the Olt river and to convey them downstream of the Arcești Dam. The Oporelu canal is registered as an artificial river in the Romania's official registry of rivers.
The Șopot River is a tributary of the Olt River in Romania. It crosses the western part of the city of Slatina and joins the drainage canal along the dyke of Lake Slatina. This canal joins the Olt River downstream of the Slatina Dam. The river is completely covered on a reach of 0.8 kilometers within the city of Slatina
