Fravashi (𐬟𐬭𐬀𐬎𐬎𐬀𐬴𐬌, frəˈvɑ:ʃi) is the Avestan term for the Zoroastrian concept of a personal spirit of an individual, whether dead, living, or yet-unborn. The fravashi of an individual sends out the urvan (often translated as 'soul') into the material world to fight the battle of good versus evil. On the morning of the fourth day after death, the urvan returns to its fravashi, where its experiences in the material world are collected to assist the next generation in their fight between good and evil.
In the 9/10th-century works of Zoroastrian tradition, the Pahlavi books, Avestan fravashi continues as Middle Persian (and -w- forms, etc), , or . The last days of a year, called (compare New Persian farvardin, first month within the Persian calendar), are dedicated to the . The first month of the year as well as the 19th day of each month are considered under the protection of, and named after, the fravashis. The winged-disc symbol of Zoroastrianism is traditionally interpreted as a depiction of a .
The word is commonly perceived to have var- "to choose," as its root. From reconstructed (/rt/ clusters in Avestan usually appear as /š/), could then mean "one who has been selected (for exaltation)." The same root, in the sense of "to choose/profess a faith," is found in the word , the name of the Zoroastrian credo.
Other interpretations take other meanings of var- into consideration: Either as var- "to cover" that in a bahuvrihi with fra- "to ward" provides "protective valor," or a derivation from var- "to make/be pregnant" which gives "promoter of birth, birth-spirit." One interpretation considers a derivation from vart- "turn" hence "turning away, departing, death." The Epistles of Zadspram, a 10th century exegetical work, derives fravashi from fra-vaxsh "to grow forth."
Like most other Zoroastrian yazatas, the fravashis are not mentioned in the Gathas. The earliest mention of them is in the Old Avestan Yasna Haptanghaiti (Y. 37) which includes an invocation of "the fravashis of the righteous" (ashavan).