No. Jainism does not forbid learning about other religions.

In Jain Dharma, one is encouraged to develop right understanding and open-mindedness, while staying firm in Samyak Darshan and Jain principles. Learning about other traditions is acceptable if done with respect, discernment, and without losing one’s commitment to Ahimsa, Satya, Aparigraha, and non-attachment.

From a Jain perspective:

• Knowledge is valuable when it leads to clarity and lessens ignorance.
• One should avoid blind acceptance or wrong belief.
• Learning about others should not become a cause of hatred, arrogance, or attachment.
• Respect for all living beings and all sincere seekers is important.

So, Jainism does not forbid studying other religions; it asks one to do so with wisdom, restraint, and respect.