| Country: | Tanzania |
| Mouth Location: | Speke Gulf, Lake Victoria |
The Grumeti River is a river in Mara Region, Tanzania, situated almost entirely within the western corridor of Serengeti National Park. It flows westward and mouths into the Speke Gulf of Lake Victoria.
It is a major river crossing for the Serengeti Great migration. During May to August, thousands of wildebeest and other animals cross the crocodile-infested waters.[1] It is famed for this sight alongside Mara River.[2]