Arni may refer to:
Municipalities Aarani, Tiruvannamalai, a town in Tamil Nadu, India Arni, Maharashtra, in Yavatmal district, Maharashtra State, India Arni, Karditsa, a municipality in the Karditsa regional unit, Greece Arni, Aargau, a municipality of the canton of Aargau in Switzerland Arni, Bern, a municipality of the canton of Bern in Switzerland
Other uses Árni, Icelandic given name a nickname for Arnold Arni, Clerodendrum phlomidis, a traditional Indian medicinal herb Arni or arnee, the wild water buffalo, Bubalus arnee Lake Arni or Arnisee ARNI, angiotensin receptor-neprilysin inhibitor: Valsartan/sacubitril
See also Arani (disambiguation) Arny (disambiguation)