Rishabhanatha, also Rishabhadeva, Rishabha or Ikshvaku, is the first tirthankara of Jainism. He was the first of twenty-four teachers in the present half-cycle of time in Jain cosmology, and called a "ford maker" because his teachings helped one cross the sea of interminable rebirths and deaths. The legends depict him as having lived millions of years ago. He was the spiritual successor of Sampratti Bhagwan, the last Tirthankar of previous time cycle. He is also known as Ādinātha, as well as Adishvara, Yugadideva, Prathamarajeshwara and Nabheya. He is also known as Ikshvaku, establisher of Ikshvaku dynasty. Along with Mahavira, Parshvanath, Neminath, and Shantinath, Rishabhanatha is one of the five Tirthankaras that attract the most devotional worship among the Jains.

In Jainism, a Tirthankara is a saviour and supreme spiritual teacher of the dharma. The word tirthankara signifies the founder of a tirtha, a fordable passage across saṃsāra, the sea of interminable birth and death. According to Jains, tirthankaras are the supreme preachers of dharma, who have conquered saṃsāra on their own and made a path for others to follow. After understanding the true nature of the self or soul, the Tīrthaṅkara attains kevala jnana (omniscience). A Tirthankara provides a bridge for others to follow them from saṃsāra to moksha (liberation).