Not exactly.

In Jain Dharma, there are 24 Tirthankars, not 24 Siddhas.

• Tirthankar: a spiritually awakened teacher who establishes the Jain path in a time cycle.
• Siddha: a soul that has completely destroyed all karmas and attained moksha.

So the correct expression is 24 Tirthankars. If you meant 24 Siddhas, that is not the usual Jain teaching.