Fourth River is a 2020 Indian Malayalam-language political thriller film directed by RK DreamWest, starring Diphul Mathew, Nithu Chandran, Baiju Bala and Rahul Krishna in key roles.

[1] Released on 28 June 2020 through Amazon Prime Video, it is the first ever Malayalam language film to have a direct to OTT.

[6] Director RK DreamWest had the intention to make a film based on the Communist political movement in India that started in the early 1920s as an anti-colonial struggle when the country was still ruled by Britain.

In 1967, the dissatisfied extreme left revolutionaries who believed in the Maoist ideology split from the party and launched an armed uprising in the remote tribal village of Naxalbari.

With the Prime Video as the distributor, Fourth River became the first ever Malayalam language film to have a direct to OTT release on 28 June 2020.