Yes. In Jain tradition, every Tirthankar achieves kevala jnana (omniscient knowledge) through intense penance and deep meditation. They practice long, rigorous ascetic disciplines and profound inner concentration to conquer passions and realize truth. Both Digambar and Shwetambar sources affirm that meditation and tapas are central to their path, though they may describe the details or emphasis slightly differently. In short, meditation is considered essential for all Tirthankaras to attain enlightenment.