Ozeki or Ōzeki may refer to:
- Ōzeki, a rank in Makuuchi, the top division of professional sumo
- List of ōzeki
- Ōzeki station (disambiguation), the name of two railway stations in Japan
- Ōzeki Masutoshi (1849–1905), 16th daimyō of Kurobane Domain in Shimotsuke Province, Japan
- Ruth Ozeki, American-Canadian author
- Tatsuya Ozeki, a Japanese baseball player
- Tokiko Ozeki, a Japanese cross-country skier
- Yukie Ozeki, a Japanese female international table tennis player
- Shinya Ozeki, a character in the manga series Hinomaru Sumo
- 10760 Ozeki, a minor planet
