Boy Name · Scottish Gaelic Origin
Callum
Callum is a boy's name whose meaning is not firmly attested in the historical record. 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.
Callum — a boy name from the Scottish Gaelic tradition — is an uncommon, standout choice. If Calum is on your shortlist, Callum belongs in the same conversation.
Callum meaning, origin, and usage
Meaning: Callum has a distinctive sound and evolving modern usage.
Origin: Scottish Gaelic naming roots help connect Callum to related Scottish Gaelic baby names.
Pronunciation: Baby Name Studio pronounces Callum as C·A·L·L·U·M, with 6 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Callum is an uncommon, standout choice in the Rare tier.
Callum variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Calluma, Callume, Callumy, Callu.
- Nicknames: Cal and C.
- Middle names: Pair Callum with a middle name that balances its substantial sound; start with the Callum middle name generator.
- Sibling names: Calum, Callan, Callen, Calen, Callahan — full picks on the sibling names for Callum guide for a cohesive sibset.
- Similar names: Looking for names that sound like Callum? Browse our names like Callum 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 Callum
What does the name Callum mean?
Callum has no single meaning that is firmly attested in the historical record. It is used as a boy name in US birth records, and parents usually choose it for its sound rather than a documented meaning.
What is the origin of Callum?
Callum originates in Scottish Gaelic naming tradition.
How do you pronounce Callum?
Callum has 6 letters and is most commonly stressed on the first syllable.
Is Callum a boy's or girl's name?
Callum is primarily used as a boy's name in US records.
How popular is Callum in 2026?
In our 2026 popularity tracker, Callum sits in the Rare tier — an uncommon, standout choice.
What names are similar to Callum?
Names that share Callum's sound and style include Calum, Callan, Callen, Calen, Callahan.
What middle names pair well with Callum?
Good middle-name fits for Callum pair an opposite syllable rhythm: if Callum is short, lean longer (e.g. classical or three-syllable middles); if Callum is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Callum?
Sibling names that pair naturally with Callum share its rhythm without rhyming — Calum, Callan, Callen all sit comfortably alongside it on a shortlist.