Kagi may refer to:
- Chiayi, a city in Taiwan
- KAGI, a radio station in Grants Pass, Oregon, United States
- Kagi, an uninhabited island in the Maldivian Kaafu Atoll
- Kagi, a paid ad-free search engine
- Kagi chart, a chart used for tracking stock price movements
- John Henry Kagi (1835–1859), American attorney and abolitionist
- The Key , first published in 1956
- Odd Obsession, a 1959 Japanese satirical comedy drama film
