Dewi can refer to any of the following:
- People
- Dewi Bebb, a Welsh rugby player
- Dewi Bridges, a Welsh bishop
- Dewi Driegen, a Dutch model
- Dewi Griffiths, a Welsh television producer and radio host
- Dewi Morgan, a Welsh bard
- Dewi Morris, a rugby player who played for England
- Dewi Nantbrân,
- Dewi Persik, an Indonesian dangdut singer
- Dewi Zephaniah Phillips, a Welsh philosopher
- Dewi Sartika, an Indonesian educator
- Dewi Sandra, an Indonesian singer and model
- Dewi Claire Schreefel, a Dutch golfer
- Dewi Sukarno, former wife of Indonesian President Sukarno
- Saint David, known by the Welsh name Dewi Sant.
- Sandra Dewi, an Indonesian actress and model
- Other
- Dewi, Welsh (Cymraeg) for "David" (also the Cherokee transliteration for "David")
- Devi, meaning goddess, known as Dewi in Javanese and Balinese
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- Dewi Danu, the Balinese water goddess
- Dewi Sri, the Javanese goddess of rice and fertility
- "Dewi", a single by Indonesian singer Once