Yes. Jains are vegetarians.

• Core rule: Jains do not eat meat, fish, or eggs. This comes from the principle of ahimsa (non-violence) toward all living beings.
• Plant foods: Many Jains also avoid root vegetables (like onions, garlic, potatoes) because pulling them up can harm tiny organisms. This practice is more strongly observed in many Digambar and strict Shwetambar communities.
• Variations: There are differences between Digambar and Shwetambar traditions. Digambar followers are typically stricter about abstaining from root vegetables and certain foods, while Shwetambar households may be more flexible in everyday practice but still follow a vegetarian diet overall.

If you’d like, I can point you to a JainKnowledge page for more details.