MallowbyNames

Fenris

FEN-ris · Of uncertain origin; possibly derived from Old Norse fen meaning 'fen, marsh' or an element meaning 'to ferry'.

2025 rank (boys)
#8,910
Babies named in 2025
8
Peak popularity
2022
2025 frequency
1 in 213,510 boys
Usually for
Boys
Trend
Declining since 2022

Declining since 2022, #8,910 for boys today.

Popularity of Fenris since 2011

Babies named Fenris per year in U.S. Social Security records.

613192020Most births 2022Boys
Data table (by decade)
DecadeBoys
2010s77
2020s81

Meaning & origin

Fenris first appeared on U.S. birth records in 2011, remaining an exceedingly rare choice. At its peak in 2022, the name still did not crack the top 8,000. By 2025, Fenris ranked 8,910th, given to roughly 1 in 213,510 newborns, and has been declining in use since 2022. The name draws directly from Norse mythology, where Fenrir is the fearsome wolf destined to fight the gods. It has not been recorded in any U.S. state's top names, reflecting its niche appeal among families drawn to mythological or fantasy-inspired names.

Fenris is a name used primarily in modern contexts, drawn from Norse mythology where Fenrir is a monstrous wolf. The name may be related to the Old Norse word 'fen', meaning 'fen' or 'marsh', or to a verb meaning 'to ferry'. Its use as a given name is a modern development, likely inspired by mythological and fantasy literature.

Nicknames & variants

Nicknames: Fen

Variants: Fenrir

Sibling names for Fenris

Names that share Fenris's style, for a brother or sister.

Sisters: Freya, Sigrid, Astrid, Ingrid, Helga

Brothers: Thor, Loki, Bjorn, Leif, Rune

A parent animal hugging its little one, the personalized name page

F is for Fenris, our favorite little boy.

F is for Fenris…”

In a Mallowby alphabet book, Fenris's letter becomes Fenris's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Fenris's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Fenris mean?
The meaning of Fenris is uncertain; it is derived from Old Norse elements possibly meaning 'fen' or 'marsh', or related to 'to ferry'. In Norse mythology, Fenrir is a monstrous wolf.
How popular is the name Fenris?
Fenris is very rare. As of 2025, it ranked 8,910th in the U.S., with an estimated 1 in 213,510 newborns given the name. Its peak popularity was in 2022.
Is Fenris a boy's name?
Fenris is almost exclusively used as a boy's name.