Boy Name · Scottish Gaelic Origin
Duncan
Duncan means “Brown”. It is a boy's name of Scottish Gaelic origin, 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.
Duncan is a boy baby name of Scottish Gaelic origin, meaning "Brown". It currently sits in the Rare tier of US baby names for 2026, and parents who love Duncan often also consider Denson.
Duncan meaning, origin, and usage
Meaning: Brown
Origin: Scottish Gaelic naming roots help connect Duncan to related Scottish Gaelic baby names.
Pronunciation: Baby Name Studio pronounces Duncan as D·U·N·C·A·N, with 6 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Duncan is an uncommon, standout choice in the Rare tier.
Duncan variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Duncana, Duncane, Duncany, Dunca.
- Nicknames: Dun and D.
- Middle names: Pair Duncan with a middle name that balances its substantial sound; start with the Duncan middle name generator.
- Sibling names: Denson, Dennison, Dustan, Duan, Dujuan — full picks on the sibling names for Duncan guide for a cohesive sibset.
- Similar names: Looking for names that sound like Duncan? Browse our names like Duncan 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 Duncan
What does the name Duncan mean?
Duncan means "Brown" and is of Scottish Gaelic origin. The meaning is recorded in English Wiktionary (CC BY-SA 4.0), and in US records Duncan is used as a boy name.
What is the origin of Duncan?
Duncan originates in Scottish Gaelic naming tradition.
How do you pronounce Duncan?
Duncan has 6 letters and is most commonly stressed on the first syllable.
Is Duncan a boy's or girl's name?
Duncan is primarily used as a boy's name in US records.
How popular is Duncan in 2026?
In our 2026 popularity tracker, Duncan sits in the Rare tier — an uncommon, standout choice.
What names are similar to Duncan?
Names that share Duncan's sound and style include Denson, Dennison, Dustan, Duan, Dujuan.
What middle names pair well with Duncan?
Good middle-name fits for Duncan pair an opposite syllable rhythm: if Duncan is short, lean longer (e.g. classical or three-syllable middles); if Duncan is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Duncan?
Sibling names that pair naturally with Duncan share its rhythm without rhyming — Denson, Dennison, Dustan all sit comfortably alongside it on a shortlist.