Boy Name · Swedish Origin
Gustaf
Gustaf is a boy's name whose meaning is not firmly attested in the historical record. It is a boy's name of Swedish 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.
Gustaf — a boy name from the Swedish tradition — is an uncommon, standout choice. If Gustav is on your shortlist, Gustaf belongs in the same conversation.
Gustaf meaning, origin, and usage
Meaning: Gustaf has a distinctive sound and evolving modern usage.
Origin: Swedish naming roots help connect Gustaf to related Swedish baby names.
Pronunciation: Baby Name Studio pronounces Gustaf as G·U·S·T·A·F, with 6 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Gustaf is an uncommon, standout choice in the Rare tier.
Gustaf variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Gustafa, Gustafe, Gustafy, Gusta.
- Nicknames: Gus and G.
- Middle names: Pair Gustaf with a middle name that balances its substantial sound; start with the Gustaf middle name generator.
- Sibling names: Gustav, Gustavo, Gustave, Gust, Gaston — full picks on the sibling names for Gustaf guide for a cohesive sibset.
- Similar names: Looking for names that sound like Gustaf? Browse our names like Gustaf 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 Gustaf
What does the name Gustaf mean?
Gustaf 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 Gustaf?
Gustaf originates in Swedish naming tradition.
How do you pronounce Gustaf?
Gustaf has 6 letters and is most commonly stressed on the first syllable.
Is Gustaf a boy's or girl's name?
Gustaf is primarily used as a boy's name in US records.
How popular is Gustaf in 2026?
In our 2026 popularity tracker, Gustaf sits in the Rare tier — an uncommon, standout choice.
What names are similar to Gustaf?
Names that share Gustaf's sound and style include Gustav, Gustavo, Gustave, Gust, Gaston.
What middle names pair well with Gustaf?
Good middle-name fits for Gustaf pair an opposite syllable rhythm: if Gustaf is short, lean longer (e.g. classical or three-syllable middles); if Gustaf is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Gustaf?
Sibling names that pair naturally with Gustaf share its rhythm without rhyming — Gustav, Gustavo, Gustave all sit comfortably alongside it on a shortlist.