Izu may refer to:
Places
- Izu Province, a part of modern-day Shizuoka prefecture in Japan
- Izu, Shizuoka, a city in Shizuoka prefecture
- Izu Peninsula, near Tokyo
- Izu Islands, located off the Izu Peninsula
People with the surname
- , Japanese photographer
- Mark Izu (1954–2025), American jazz double bass player and composer