In Jainism, the 24 Tirthankaras are consistently described as male in both Digambar and Shwetambar traditions. If you’re talking about a specific figure, please note that distinction: while there are many revered female beings (such as enlightened souls and respected authors or teachers), they are not listed as Tirthankaras in the canonical accounts.

If you meant a different context (for example, a story, a historical figure, or a gender change in a past life), please specify which figure you have in mind and I’ll explain how Jain sources understand that case within the traditional framework.