Boy Name
Duffy
Duffy means “Descendant of Dubhthach”. It is used as a boy's name across several naming traditions, and it is rare in the United States today — outside the SSA top 1,000.
Origin and meaning: English Wiktionary (CC BY-SA 4.0). Popularity: US Social Security Administration.
Considering Duffy? It is a boy name whose meaning is "Descendant of Dubhthach", and ranks in our Rare popularity tier. Phonetically it shares territory with Duff.
Duffy meaning, origin, and usage
Meaning: Descendant of Dubhthach
Origin: Multiple naming traditions are associated with this name.
Pronunciation: Baby Name Studio pronounces Duffy as D·U·F·F·Y, with 5 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Duffy is an uncommon, standout choice in the Rare tier.
Duffy variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Duffya, Duffye, Duffyy, Duff.
- Nicknames: Duf and D.
- Middle names: Pair Duffy with a middle name that balances its substantial sound; start with the Duffy middle name generator.
- Sibling names: Duff, Davie, Davey, Davy, Dov — full picks on the sibling names for Duffy guide for a cohesive sibset.
- Similar names: Looking for names that sound like Duffy? Browse our names like Duffy guide for phonetic-neighbor picks.
- Explore more: use the Baby Name Explorer, name search, AI name generator, and Baby Name Studio homepage.
Frequently asked about Duffy
What does the name Duffy mean?
Duffy means "Descendant of Dubhthach". The meaning is recorded in English Wiktionary (CC BY-SA 4.0), and in US records Duffy is used as a boy name.
What is the origin of Duffy?
The exact origin of Duffy is debated, but it has been used across multiple naming traditions.
How do you pronounce Duffy?
Duffy has 5 letters and is most commonly stressed on the first syllable.
Is Duffy a boy's or girl's name?
Duffy is primarily used as a boy's name in US records.
How popular is Duffy in 2026?
In our 2026 popularity tracker, Duffy sits in the Rare tier — an uncommon, standout choice.
What names are similar to Duffy?
Names that share Duffy's sound and style include Duff, Davie, Davey, Davy, Dov.
What middle names pair well with Duffy?
Good middle-name fits for Duffy pair an opposite syllable rhythm: if Duffy is short, lean longer (e.g. classical or three-syllable middles); if Duffy is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Duffy?
Sibling names that pair naturally with Duffy share its rhythm without rhyming — Duff, Davie, Davey all sit comfortably alongside it on a shortlist.