Worldwide, Ildephonse (Ildephonse 
) is a rare male given name. The first name Ildephonse is habitual in Burundi, where it is quite a rare male name, Belgium, where it is a rare boy's name, and France, where it is a very rare masculine name. Also, Ildephonse is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ildephonse | Belgium, Burundi, Rwanda, France, Democratic Republic of the Congo |
Idelphonse, and Ildéphonse
| ildephonse cathelinot FR (b. 1670) |
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ildephonse dalbertanson French lawyer and politician, FR (b. 1834) |
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| ildephonse masquillier BE (b. 1803) |
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| ildephonse stocquart Belgian painter, BE (b. 1819) |
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| ildephonse lanslots Roman Catholic clergyman (b. 1859) |
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| ildephonse sehirwa Rwandan long-distance runner, RW |
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| ildephonse wittmann |
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