Mythologia Fennica (lit. 'Finnish Mythology') is a 1789 book on Finnish mythology written in Swedish by Kristfrid Ganander, a Finnish priest.
Mythologia Fennica contains 430 entries in alphabetical order from "AARNI" to "YRJÄNÄ". Entries cover Finnish mythology, folk poetry, spells, Sámi mythology, and the Norse gods.[1]
The work influenced Elias Lönnrot, compiler of the epic Kalevala; as a result, Ganander has been later perceived as a kind of "Lönnrot before Lönnrot."[2]