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 and Spanish. It also means "subject" in Italian and Spanish, and is the ascendant of Portuguese "Matéria".