Rishabhdev (Lord Rishabh)—also known as Bhagwan Adinath—was the first of the Jain Tirthankars , the founder of Jainism in the present half cycle of time, in this part of the universe. He is mentioned in the Hindu Bhagavatha-Purana.

He lived billions of years ago and attained liberation ("moksh" or "nirvan") towards the end of the third era of the present half cycle of time. At the beginning of the twenty first century, we are approximately 2,530 years into the fifth era.

According to Jainism, time has no beginning and no end. It moves in the same way as the wheel of a moving cart or bicycle. There have been an infinite number of time cycles before the present one and there will be an infinite number of time cycles after the present one. Twenty four Tirthankars are born in each half cycle of time, that is forty eight in each full cycle, in this part of the universe.

The next Tirthankar in this part of the universe will be born at the beginning of the third era in the next half cycle of time, that is in approximately 81,500 years.

There are many temples (derasar) dedicated to Rishabhdev in India. Examples include the "Shree Vataman Chowkdi Bhagwan Adinath derasar", and on the road from Ahmedabad to Palitana.