# Fido (first name)

Source: https://namelineage.com/first-name/fido/  
Publisher: Name Lineage. US counts from the Social Security Administration; England and Wales counts from the Office for National Statistics; meaning and etymology from Wiktionary. Data updated 2026-11-11.

| Field | Value |
|---|---|
| Usually given to | boys and girls |
| Origin | Latin |
| Meaning | “faithful”, “to trust”, “rely on” |
| Pronunciation | /ˈfaɪ.doʊ/, 2 syllables |
| Nicknames | none recorded |
| Variant spellings | none recorded |
| US babies named this | not in the US data |
| Boys / girls in the US | not in the US data |
| Babies in England and Wales | not in the ONS data |

## Etymology

From Spanish or Italian fido from Latin fīdus (“faithful”). Popularly claimed to be directly from Latin fīdō (“to trust, rely on”) instead of the Romance intermediary, but this might be folk etymology. The stereotypical dog's name is evidently very old; a newspaper from 1760 cites, "[a] small white Greyhound with a Collar, answers to the Name of Fido."

## What it means

Fido is grouped under faith.

## In other languages

- Dutch: Bello
- Finnish: Musti
- French: Médor, Rex
- German: Bello
- Portuguese: Totó
- Russian: Ша́рик, Бо́бик, Ту́зик, Рекс
- Spanish: Firuláis
- Welsh: Pero, Tango, Carlo, Smot

## How to read these numbers

A count is babies registered with that name in that year, not people alive now, so a name common a century ago can have a large total and few recent births.