Grey oak or gray oak is a common name that may refer to several Plant, plants including:
* ''Casuarina glauca''
* ''Grevillea hilliana''
* Several species of ''Quercus'' including:
**''Quercus grisea''
**''Quercus leucotrichophora''
**''Quercus turbinella''
See also
* Gray's oak, ''Quercus ambigua'', a synonym of ''Quercus diversifolia''
{{Plant common name