Helldive is a Blue Magic skill that is learned from Birds in Final Fantasy XI. It physically strikes one enemy. Damage varies with TP. It has a Knockback effect. It costs 2 Blue Magic Points to set. When set, it grants CHR +1 and HP +5. It takes .5 seconds to cast and can be recast every 11.25 seconds.

Helldive is also an enemy ability used by the Bird family.