No. In Jain Dharma, Adinath Dada (Bhagwan Rishabhdev) and Shiva are not the same.

• Adinath Dada is the first Tirthankar of Jainism.
• A Tirthankar is a fully enlightened soul who shows the path of liberation.
• Shiva is a deity from Hindu tradition.

So, from the Jain point of view, Adinath is a Tirthankar, not Shiva. Their identities, roles, and spiritual meanings are different.