| Zarjoob River | |
| Pushpin Map: | Iran |
| Pushpin Map Caption: | Location of mouth in Iran |
| Subdivision Type1: | Country |
| Subdivision Name1: | Iran |
| Subdivision Type2: | Province |
| Subdivision Name2: | Gilan |
| Length: | 41 km |
| Discharge1 Location: | Anzali Lagoon |
Zarjoob or Zarjoub (Persian: <big>زرجوب</big>), in Gilan province, northern Iran, is a 41 km river that passes through the city of Rasht and empties into the Anzali Lagoon near the city of Bandar-e Anzali on the Caspian Sea.
Despite its short length, the Zarjoob watershed is home to about 1 million people and the river is heavily polluted. Sources of pollution include leaching from a landfill that receives some 700 tons of waste per day, approximately 500 factories, domestic and hospital wastewater, and agricultural runoff from rice paddies.[1]