Kotharia may refer to the following places in India :
- Kotharia, Rajasthan, a town in Rajsamand district
- Kotharia Jagir, a former feudal estate in Udaipur State, with seat in the above town
- Kotharia, Rajkot, a town in Rajkot district of Gujarat
- Kotharia State, a former princely state with seat in the above town