Yes, generally Jains can eat avocado.

Reason:

• Avocado is a tree fruit, not a root (kand-mool).
• Plucking it does not kill the plant, so himsa (violence) is much less compared to potatoes, onions, garlic, etc.

But you should:

• Use fresh avocado (not overripe).
• Check carefully that there are no insects/worms inside.
• Avoid mixing it with non‑Jain items (eggs, onion, garlic, etc.) in salads, sandwiches, etc.

So, a plain, fresh, clean avocado is normally acceptable in a Jain diet. You can read a short Q&A on this topic here: