Dies Irae may refer to:
- The enemy ability from Final Fantasy X-2.
- The weapon from Final Fantasy XI.
- The enemy ability from Final Fantasy XIII.
- Part of lyrics of Ragnarok's theme from Final Fantasy XIII, also used in "Fighting Fate".
- The ability from Mobius Final Fantasy
Dies Irae is Latin for "Day of Wrath". Dies Irae is also a Latin hymn written possibly by Thomas of Celano in thirteenth century: it describes the day of judgment.