🇫🇷 France · Boy names
French Boy Names Starting with O
🇫🇷 France has 135 registered French boy names starting with the letter O, including Oan, Obed, Ocean, Octave, Octavian. Each name on this list complies with France's naming law as administered by the État civil, meaning parents can register their baby with any of these names without legal pushback. Use this page to browse, then click any name to see its full legal profile, regional variants, and registration tips. For an overview of all naming rules in France, visit our France country guide.
135
Names starting with O
8089
Total boy names
État
Naming authority
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All 135 French boy names starting with O
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FAQ
How many French boy names start with O?
There are 135 French boy names beginning with the letter O in our EuroNameCheck database, out of 8089 total French boy names registered with the État civil.
Are these names legally registrable in France?
Yes. Every name on this page is drawn from publicly accepted French naming practice and the État civil register. Spelling, accents and length all comply with France's naming law. Always confirm with your local registry office before registration.
What is the most popular French boy name starting with O?
Oan is a leading French boy name starting with O in our database of 135 options. For real-time popularity rankings, see our France top names page.
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Run any of these names through our free legality checker — covers all 25 European countries.
Check a Name →Last updated: 2026-05-13. For informational purposes only. Always consult your local État civil for definitive answers.