Throughout the world, Idelphonse (Idelphonse 
) is a rare male first name. The given name Idelphonse is characteristic of Sub-Saharan Africa, particularly Ethiopia, where it is a rare male name. Very seldom, Idelphonse is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Idelphonse | Ethiopia, South Africa, Rwanda, France, Benin |
| idelphonse stocquart (b. 1819) |
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| idelphonse nizeyimana Rwandan war criminal murder of Rosalie Gicanda, RW (b. 1963) |
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| idelphonse hategekimana Rwandan soldier, RW (b. 1964) |
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