Who was the first jain tirthankar?

Ah, an excellent question. The first Jain Tirthankara was Rishabhanatha. He is also known as Adinatha, which simply means the "First Lord." According to Jain beliefs, he was a king who established civilization in our current era. He taught people vital skills like agriculture and writing before attaining enlightenment. Many people mistake Mahavira as the first, but he was actually the 24th and final Tirthankara, a great reformer of the existing faith.