No. Jains do not drink whisky or any alcoholic beverage.

Reason (arth):

• Alcohol is an intoxicant that clouds the mind, making self-control difficult and hindering right conduct (samyak) and spiritual progress.
• Consuming intoxicants goes against ahimsa (non-violence) toward one’s own mind and body, and it disrupts meditation, pratikraman, and vow-keeping.
• In Jain teachings, intoxicants are listed among things to avoid for lay followers and monks alike; abstinence supports inner purity and discipline.

Tradition note:

• This applies across major Jain sects (Digambar and Shwetambar)—both emphasize restraint from intoxicants as part of ethical living.

You can read more here and about the Twelve Vows of Laypersons which include abstention from intoxicants .