Boy Name · English Origin
Knox
Considering Knox? It is a boy name whose meaning is "Pure hearted", rooted in English naming tradition, and ranks in our Rare popularity tier. Phonetically it shares territory with King.
Knox meaning, origin, and usage
Meaning: Pure hearted
Origin: English naming roots help connect Knox to related English baby names.
Pronunciation: Baby Name Studio pronounces Knox as K·N·O·X, with 4 letters and a boy usage profile.
Popularity: According to Baby Name Studio's 2026 tracker, Knox is an uncommon, standout choice in the Rare tier.
Knox variants, nicknames, middle names, and sibling names
- Variants and spelling ideas: Knoxa, Knoxe, Knoxy.
- Nicknames: Knox works as its own nickname.
- Middle names: Pair Knox with a middle name that balances its short sound; start with the Knox middle name generator.
- Sibling names: King, Kong, Kenzo, Kenji, Kinsey — full picks on the sibling names for Knox guide for a cohesive sibset.
- Similar names: Looking for names that sound like Knox? Browse our names like Knox 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 Knox
What does the name Knox mean?
Knox means "Pure hearted" and is of English origin.
What is the origin of Knox?
Knox originates in English naming tradition.
How do you pronounce Knox?
Knox has 4 letters and is most commonly stressed on the first syllable.
Is Knox a boy's or girl's name?
Knox is primarily used as a boy's name in US records.
How popular is Knox in 2026?
In our 2026 popularity tracker, Knox sits in the Rare tier — an uncommon, standout choice.
What names are similar to Knox?
Names that share Knox's sound and style include King, Kong, Kenzo, Kenji, Kinsey.
What middle names pair well with Knox?
Good middle-name fits for Knox pair an opposite syllable rhythm: if Knox is short, lean longer (e.g. classical or three-syllable middles); if Knox is longer, a one-syllable middle keeps the full name from feeling heavy.
What are good sibling names for Knox?
Sibling names that pair naturally with Knox share its rhythm without rhyming — King, Kong, Kenzo all sit comfortably alongside it on a shortlist.