Isabeau is a girl's name of French origin meaning “God is my oath; associated with powerful female figures in medieval literature..” It has 3 syllables, giving it an elegant, melodic rhythm. Common nicknames include Isa, Beau. As of 2026, Isabeau ranks #942 among girls' names in the United States and has held a steady level of popularity. Its highest US ranking was #802 in 1987.
Love Isabeau? and compare it with your partner.
ee-zah-BO
Phonetic spelling
Currently #942 among US baby names.
* Based on US Social Security Administration birth-registration data
Isabeau means “God is my oath; associated with powerful female figures in medieval literature..” It is a girl's name of French origin.
Isabeau is pronounced ee-zah-BO.
Isabeau is most commonly used as a girl's name.
Isabeau currently ranks #942 among girls' names in the United States.
Popular nicknames for Isabeau include Isa, Beau.
Middle names that pair well with Isabeau include Isabeau Margot, Isabeau Simone, Isabeau Elise.
Other French names you might love
“Light (variant of Lucille)”
“Light (variant of Lucille)”
“Victory of the people”
“Bitter, beloved”
“Sunshine; a beautiful name that symbolizes warmth and positivity, embraced in literary circles.”
“God is gracious; Hebrew origin meaning "God shows mercy"”
“From Lacy, France”
“Queen; Old English origin meaning "female ruler" or "noblewoman"”
Save Isabeau to your shortlist, swipe through thousands of names, and find the one you and your partner both love.