Alder is the common name of Alnus, a genus of shrubs and small trees. Alder may also refer to: People Alder (surname) Places Alder, Colorado Alder, Montana, United States Alder, Oregon, United States Alder, Washington, United States Alders Brook, a small tributary of the River Roding Alder Creek (disambiguation) Alder River, Nova Scotia, Canada Des Aulnes River (Laflamme River) (English: Alders River), Quebec, Canada Other uses Alder (crater), lunar crater Alder (Pendragon series), a fictional character in The Pendragon Adventure Dwarf alder (disambiguation), common name of several plants Witch alder, plants of genus Fothergilla A shortened form of Aldernalisuvara, an alternative name of the Hindu deity Ardhanari particularly used by Japanese Alder (Pokémon), the champion of the Unova League in Pokémon Black and White Alders (surname) See also Alda (disambiguation) Elder (disambiguation)