Janaki may refer to:
- Janaki, Iran (disambiguation)
- Janaki Rural Municipality (disambiguation), rural municipalities in Nepal
- Sita, a Hindu goddess of the Ramayana
People with the name
- Janaki Ballabh Patnaik or J. B. Patnaik, leader of Indian National Congress and a former chief minister of Orissa
- V. N. Janaki Ramachandran (1923–1996) Indian Tamil actress and former Chief Minister of Tamil Nadu
- Janaki Srinivasa Murthy, popularly known as Vaidehi, Kannada language writer
- S. Janaki, Indian playback singer
- Sowcar Janaki, Indian actress
- Janaki Mandir, a Hindu temple at the heart of Janakpur, Nepal dedicated to goddess Seeta
- Janakiammal, wife of Srinivasa Ramanujan
- Janaki Ammal, Indian scientist (botanist)