Kosal may refer to:
- Kosala, an ancient Indian region, corresponding roughly in area with the region of Oudh in the present day Uttar Pradesh state
- Kosala Kingdom or Uttara Kosala, a kingdom mentioned in the ancient Indian texts
- Dakshina Kosala Kingdom, a colony of Kosala kings identified to be the Chhattisgarh state and western Orissa region of India
- Western Orissa, a territory in the western part of Orissa state of India