Okayama (disambiguation)
- 2084 Okayama
- Amane Okayama
- Fagiano Okayama F.C.
- Kazunari Okayama
- Oka (disambiguation)
- Okayama
- Okayama (dance)
- Okayama Airport
- Okayama Broadcasting
- Okayama Castle
- Okayama College
- Okayama Domain
- Okayama Electric Tramway
- Okayama Expressway
- Okayama Freight Terminal
- Okayama Gakuin University
- Okayama General and Cultural Gymnasium
- Okayama International Circuit
- Okayama Planet Search Program
- Okayama Prefectural University
- Okayama Prefecture
- Okayama Seagulls
- Okayama Shoka University
- Okayama Station
- Okayama University
- Okayama University of Science
- Okayama at-large district
- Saeko Okayama
- Tomoki Okayama
- Yama (disambiguation)
- Ōokayama Station