Leti can refer to:
- The Leti Islands in Maluku, Indonesia
- Leti (island), one of the Leti islands in Maluku, Indonesia
- Leti, Punjab, a village and Union Council in Pakistan
- CEA-Leti Laboratoire d'électronique des technologies de l'information - French-based research institute for electronics and information technologies
- LETI, a nickname and an old title of Saint Petersburg State Electrotechnical University