Peninsular rivers are a type of Indian river system, and they are one of two types of Indian river systems, along with the Himalayan river system. The major rivers of the Peninsular River System are the Mahanadi, Godavari, Krishna, Kaveri (also known as Cauvery), Narmada, and Tapti Rivers. These rivers are mostly fed by rainfall, and their discharge is significantly less during the summer season. Some of their tributaries get dehydrated during this time, only to be regenerated in the monsoon.

Peninsular rivers are characterized by broad and shallow U-shaped valleys, and they have shorter and shallower courses compared to their Himalayan counterparts. The Western Ghats create the main water divide in peninsular rivers, and most peninsular rivers, except Narmada and Tapi, flow from west to east. Fixed courses, the absence of meanders, and non-perennial flow of water are some characteristics of peninsular rivers. The catchment region of the Godavari River in the peninsula is one of the biggest in India, covering 10% of the territory of the whole country.

Peninsular rivers carry both religious and cultural significance in the lives of Indian people. They are mostly found in rural areas of India and are important for agriculture, transportation, and hydroelectric power generation.