Arnai is a village located at the confluence of Aruna River and Saraswati River, in Kurukshetra District of Haryana. It is about 6 km from Pehowa.
The place is famous for the Aruna Teerth. Other tourists locations in and around the village are Bhadrakali Temple and a temple dedicated to Lord Shiva.
Arnai can be approached from Pehowa, which is well-linked by National Highway 22.