Dirr may refer to: * Michael Dirr, American horticulturist **''Dirr's Trees and Shrubs for Warm Climates'', sometimes abbreviated Dirr or Dirr's; see List of horticulture and gardening books/publications *Otillie Dirr, a founder of the Sisters of St. Francis of Assisi *dirr, an abbreviation for dwarf irregular galaxy

See also