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The short answer
Isabelle is a feminine name used in French, English, German, Dutch and Swedish. Behind the Name defines it simply as the French form of Isabel, and Isabel in turn as the medieval Occitan form of Elizabeth. Elizabeth comes from the Hebrew name ʾElishevaʿ, meaning "my God is an oath", from the roots ʾel (referring to the Hebrew God) and shavaʿ ("oath"), so that is the meaning Isabelle ultimately carries. In English it is pronounced IZ-ə-bel; in French, ee-za-BEL. In the United States it ranked #166 for girls in 2025.
Meaning and etymology
Behind the Name gives Isabelle as the "French form of Isabel", and its root line, "ʾel + shavaʿ", is the same as Elizabeth's. Following the chain: Isabel is described on its own entry as the "medieval Occitan form of Elizabeth", which spread through Spain, Portugal and France and was common among royalty by the 12th century; and Elizabeth is derived "from Ἐλισάβετ (Elisabet), the Greek form of the Hebrew name אֱלִישֶׁבַע (ʾElishevaʿ) meaning 'my God is an oath', derived from the roots אֵל (ʾel) referring to the Hebrew God and שָׁבַע (shavaʿ) meaning 'oath'". Behind the Name lists Isabel and Isabeau as French variants, Isabel as the English variant, Isabell in German, and Isabella in Dutch and Swedish; the English diminutives given are Bell, Belle, Isi, Issy and Izzy.
Editorial confidence: established
Linguistic roots
| Language | Form | Meaning |
|---|---|---|
| French | Isabelle | French form of Isabel |
| Medieval Occitan | Isabel | medieval Occitan form of Elizabeth |
| Hebrew | אֱלִישֶׁבַע (ʾElishevaʿ) | my God is an oath |
| Hebrew | אֵל (ʾel) + שָׁבַע (shavaʿ) | God + oath |
Popularity
Isabelle ranked #166 for girls in the United States in 2025 (Social Security Administration).
| Region | Year | Rank | Source |
|---|---|---|---|
| United States | 2025 | #166 | ssa-2025 |
Nicknames, variants, and related names
Nicknames: Belle, Bell, Izzy, Issy, Isi
Variants: Isabel, Isabell, Isabella, Izabelle, Isabeau
Related names: Elizabeth, Elisabeth, Isobel, Ishbel, Isabela, Élisabeth
What the name feels like
Isabelle is a soft, three-syllable name whose French spelling gives it a little more polish than plain Isabel and a little more restraint than Isabella. The built-in nickname Belle, and the sturdier Izzy, let it move between formal and casual easily, and it belongs to the large family of Elizabeth names that never quite go out of fashion.
Style tags: French, form of Elizabeth, three syllables, romantic, classic
Editorial interpretation: These style impressions are editorial judgment, not linguistic fact. The nicknames are those listed by Behind the Name as English diminutives; Isobel and Ishbel in relatedNames are the Scottish forms taken from Behind the Name's 'Other Languages & Cultures' list.
If you like this name
Names that share Isabelle's Elizabeth roots, its French sound, or its soft three-syllable rhythm.
Similar by meaning
Similar by origin
Similar by sound
Frequently asked questions
What does the name Isabelle mean?
Isabelle is the French form of Isabel, which is a medieval Occitan form of Elizabeth. Elizabeth comes from Hebrew ʾElishevaʿ, "my God is an oath", so Isabelle ultimately carries that meaning.
What is the difference between Isabelle, Isabel and Isabella?
They are the same name in different national dress. Behind the Name gives Isabelle as the French form, Isabel as the Spanish, Portuguese and English form (and the original medieval Occitan one), and Isabella as the Italian, Dutch and Swedish form.
Is Isabelle a popular name?
Isabelle ranked #166 among girls' names in the United States in 2025, according to Social Security Administration data.
Sources
- Behind the Name: Meaning, origin and history of the name Isabelle — supports French-form derivation, pronunciation, variants, diminutives, other-language forms.
- Behind the Name: Meaning, origin and history of the name Isabel — supports medieval Occitan derivation from Elizabeth, spread through Spain, Portugal and France.
- Behind the Name: Meaning, origin and history of the name Elizabeth — supports Hebrew etymology and the gloss 'my God is an oath'.
- U.S. Social Security Administration: Popular Baby Names — national data, year of birth 2025 — supports popularity.
