O
- Osmium tetroxide (osmium(VIII) oxide) – OsO4
- Osmium trioxide (osmium(VI) oxide) – OsO3
- Oxybis(tributyltin) – C24H54OSn2
- Oxygen difluoride – OF2
- Ozone – O3
Read more about this topic: List Of Inorganic Compounds
O
Read more about this topic: List Of Inorganic Compounds