Niyodogawa

 is a town located in Agawa District, Kōchi Prefecture, Japan.
The town was formed on August 1, 2005 from the merger of the town of Ikegawa, the village of Agawa, both from Agawa District, and the village of Niyodo, from Takaoka District.
As of May 1, 2017, the town has an estimated population of 5,676 and a density of 17 persons per km². The total area is 332.96 km².
The town is situated on the upper reaches of the Niyodo River. Routes 33 (the Tosa Kaidō), 439, and 494 link it with surrounding areas in Shikoku.
Access.
Niyodogawa is not serviced by any rail links, and public transport outside of the town is limited. 
Route 33 connects it to Ochi, Sakawa and Kōchi City to the east, and continues eastwards as far as Matsuyama in neighbouring Ehime Prefecture.
Festivals.
The most popular festival held in Niyodogawacho is the Akibamatsuri, held annually on February 11. A day long procession up a hillside to the Akiba temple, it features elaborate costumes, a highly choreographed march and focuses on the tossing of long wooden poles topped with the tail feathers of Onagadori, the famous long tailed roosters of Kōchi Prefecture.
Often designated as one of the three major festivals in the Kōchi festival calendar, it is the one occasion where many former residents of the town return to participate, particularly important for a small town ravaged by depopulation.