No. In Jainism, there are 24 Tirthankaras (omniscient ford-makers). Savariya Seth is not listed among them. He may be a respected layperson or an even/important figure in local tradition, but he is not considered a Tirthankar in the Jain scriptures. If you have a specific context or text in which you saw this name, I can help clarify what that reference means.