Yes. Jainism is a real, ancient धर्म/faith with a long historical tradition, scriptures, teachings, temples, and living followers.

From the Jain viewpoint, it is not only “real” as a religion, but also a path based on truth, ahimsa, self-discipline, and liberation of the soul.

If you mean “real” in a spiritual sense, Jainism teaches that the soul, karma, and moksha are all real principles.