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| Fallbeyging | |
| Nefnifall | Alfons |
| Þolfall | Alfons |
| Þágufall | Alfons |
| Eignarfall | Alfons |
| Notkun núlifandi¹ | |
| Fyrsta eiginnafn | 8 |
| Seinni eiginnöfn | 5 |
| ¹Heimild: þjóðskrá júlí 2007 | |
| Listi yfir íslensk mannanöfn | |
Alfons er íslenskt karlmannsnafn.