From *Inger + -e. Further etymology unknown, although similar river names are also found from further east in Northern Russia, like Ингерь(Ingerʹ), Ингирь(Ingirʹ) (both in Kostroma Oblast) and Ингрия(Ingrija) (in Tikhvinsky District).[1] One possibility is a borrowing from a West Uralic language (possibly "language X" (x-kieli), a lost West Uralic substrate found in place names, or Meryan), from a word akin to Eastern Mariэҥер(eŋer), Western Mariӓнгӹр(ängÿr, “stream”). The parish is named after the river.
^ Kepsu, Saulo (2020) Inkerin pogostat – vanha nimistö ja asutus (Kotimaisten kielten keskuksen verkkojulkaisuja; 66)[1], Helsinki: Kotimaisten kielten keskus, →ISBN, →ISSN, page 228