Allika (lit. "source of water") may refer to several places in Estonia:
Places Allika, Saue Parish, village in Saue Parish, Harju County Allika, Kuusalu Parish, village in Kuusalu Parish, Harju County Allika, Hiiu County, village in Hiiumaa Parish, Hiiu County Allika, Lääne County, village in Haapsalu, Lääne County Allika, Lääne-Viru County, village in Vinni Parish, Lääne-Viru County Allika, Pärnu County, village in Lääneranna Parish, Pärnu County
People Marno Allika (born 1982), Estonian fencer
See also Alliku (disambiguation)