Mountain ash may refer to:
* Eucalyptus regnans, the tallest of all flowering plants, native to Australia
* Mountain-ashes or rowans, varieties of trees and shrubs in the genus Sorbus
Mountain ash may refer to:
* Eucalyptus regnans, the tallest of all flowering plants, native to Australia
* Mountain-ashes or rowans, varieties of trees and shrubs in the genus Sorbus (en)
Mountain ash may refer to:
* Eucalyptus regnans, the tallest of all flowering plants, native to Australia
* Mountain-ashes or rowans, varieties of trees and shrubs in the genus Sorbus (en)