The main achievements in the sphere of epistemology obtained in Jainism, one of the most interesting trends in religious and philosophical life of India in the 1st millennium BC, are briefly characterized in the paper. Two very important Jain theories of knowledge are analyzed: the seven-points scale of approaches towards a coordinated view upon objects, named ‘Naya-vaada’, and the relative-pluralistic doctrine of relations between the subject and object of cognition which is called ‘Syaad-vaada’ and which is based on seven fundamental assertions.