Answer: No. In Jainism, Ravana (Ravan) is not considered a Tirthankar in the present or in any legitimate Jain tradition as the next Tirthankar. Jain texts do mention Ravana as a learned king and devotee in some Ramayana retellings, but he is not worshipped as a Tirthankar. The 24 Tirthankaras of this time cycle are fixed, with Mahavira being the last in this cycle; Ravana is not listed among them. Some modern summaries or informal discussions may claim otherwise, but they do not reflect canonical Jain doctrine. You can read more on this topic here