Mountain Ash

Mountain Ash may refer to:

Places

 * Mountain Ash, Rhondda Cynon Taf, a town in Wales
 * Mountain Ash railway station
 * Mountain Ash RFC, a rugby union club
 * Mountain Ash, Kentucky, a town in the U.S.

Plants

 * Mountain-ash or rowan, several rose shrubs or trees in the genus Sorbus
 * Australian mountain ash or stringy gum (Eucalyptus regnans), a forest tree