Red Materia may refer to:
- Summon Materia, a type of Materia from Final Fantasy VII.
- The enemy from Crisis Core -Final Fantasy VII-.
- The artefact from Final Fantasy Tactics.
- The item from Final Fantasy Airborne Brigade.
Materia means "matter" or "substance" in Latin. It also means "subject" in Italian and Spanish, and is the ascendant of Portuguese "Matéria".