Will o' Wisp may refer to:
- The ability from Final Fantasy V.
- The ability from Final Fantasy VI.
- The ability from Final Fantasy Tactics.
will-o'-the-wisp are atmospheric ghost lights seen by travellers at night, especially over bogs, swamps or marshes. It resembles a flickering lamp and is said to recede if approached, drawing travellers from the safe paths. The phenomenon is known by a variety of names, including jack-o'-lantern, friars's lantern, hinkypunk, and hobby lantern in English folk belief, and is well attested in European folklore.A